ASTROSAT CZTI

Data Quality Report

Orbit 20201110_A09_038T36_9000003978_level2

Creation date: 2021-01-07T14:46:17.926304
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_038T36_9000003978cztM0_level2_bc.evt modeM0/AS1A09_038T36_9000003978cztM0_level2_quad_clean.evt
Size (bytes)233,717,760100,998,720
Size222.9 MB 96.3 MB
Events in quadrant A1,266,397663,708
Events in quadrant B1,316,968675,418
Events in quadrant C1,397,118644,186
Events in quadrant D2,648,951624,203

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133220
B0134240
C0137610
D0174770

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64671922.968919%
B64672103.247255%
C64672604.020411%
D64672964.577084%

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 6766 6465 0 0 0.00% 0.00%
B 6766 6465 0 0 0.00% 0.00%
C 6766 6465 8 8 0.12% 0.12%
D 6766 6465 39 39 0.58% 0.60%

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 13 254 9553 125.66 324 316 73.5
A 13 248 4246 53.46 324 316 73.5
A 8 192 3970 49.71 324 316 73.5
B 0 230 27581 418.87 327 318 65.1
B 15 32 17654 266.35 327 318 65.1
B 15 33 9787 145.48 327 318 65.1
C 8 208 147246 1938.41 311 308 75.8
C 3 233 30297 395.62 311 308 75.8
C 10 22 12420 159.78 311 308 75.8
D 12 2 762178 10282.95 316 304 74.1
D 1 52 439258 5924.53 316 304 74.1
D 2 250 177766 2395.19 316 304 74.1

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