ASTROSAT CZTI

Data Quality Report

Orbit 20200926_A09_120T02_9000003904_level2

Creation date: 2021-01-08T02:28:08.310777
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A09_120T02_9000003904cztM0_level2_bc.evt modeM0/AS1A09_120T02_9000003904cztM0_level2_quad_clean.evt
Size (bytes)14,314,654,0803,836,240,640
Size13.3 GB 3.6 GB
Events in quadrant A124,168,03523,048,930
Events in quadrant B121,190,33025,711,259
Events in quadrant C58,714,76725,408,137
Events in quadrant D111,587,53924,026,094

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04210
B04220
C04220
D04220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053520
B053520
C053520
D053520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09316400
B07519360
C05621260
D07437450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2626334719417.969562%
B2626452917111.106627%
C26263748341.840563%
D262650181756.919855%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 309172 262636 105 105 0.03% 0.04%
B 309172 262630 10449 10449 3.38% 3.98%
C 309172 262634 11 11 0.00% 0.00%
D 309172 262632 4496 4496 1.45% 1.71%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 235 67772952 22010.09 14014 13796 3078.5
A 6 16 1371496 441.02 14014 13796 3078.5
A 0 13 559904 177.39 14014 13796 3078.5
B 0 189 60780699 20986.8 14944 14706 2895.4
B 10 246 1367191 467.11 14944 14706 2895.4
B 0 219 611604 206.15 14944 14706 2895.4
C 15 208 944650 262.71 14917 14971 3538.8
C 2 16 267931 71.48 14917 14971 3538.8
C 4 224 90011 21.2 14917 14971 3538.8
D 1 52 42676219 12397.71 14665 14222 3441.1
D 2 250 4772146 1382.67 14665 14222 3441.1
D 12 233 4196182 1215.29 14665 14222 3441.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter