ASTROSAT CZTI

Data Quality Report

Orbit 20200123_C05_002T04_9000003454_level2

Creation date: 2020-01-24T10:30:25.904724
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/AS1C05_002T04_9000003454cztM0_level2_bc.evt modeM0/AS1C05_002T04_9000003454cztM0_level2_quad_clean.evt
Size (bytes)201,156,48061,312,320
Size191.8 MB 58.5 MB
Events in quadrant A1,114,534390,472
Events in quadrant B1,181,225394,719
Events in quadrant C1,940,643378,706
Events in quadrant D1,539,520373,955

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099250
B0101620
C0130340
D0111830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4535741.631753%
B4535791.742007%
C45351533.373760%
D45351142.513782%

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 5860 4534 0 0 0.00% 0.00%
B 5860 4535 0 0 0.00% 0.00%
C 5860 4534 1 1 0.02% 0.02%
D 5860 4535 6 6 0.10% 0.13%

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 6609 100.27 288 283 63.1
A 12 16 3040 43.7 288 283 63.1
A 12 194 2454 34.41 288 283 63.1
B 0 189 36082 650.3 288 283 55.1
B 0 190 20209 361.96 288 283 55.1
B 0 229 8826 155.19 288 283 55.1
C 0 239 859215 13145.0 277 277 65.3
C 7 247 12707 190.23 277 277 65.3
C 2 16 3437 48.36 277 277 65.3
D 1 52 299524 4443.49 285 276 67.3
D 6 112 61436 908.16 285 276 67.3
D 12 233 26279 386.11 285 276 67.3

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