ASTROSAT CZTI

Data Quality Report

Orbit 38713

Creation date: 2024-06-27T21:55:28.163926
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A12_054T01_9000005392_38713cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38713cztM0_level2_quad_clean.evt
Size (bytes)1,023,442,560148,417,920
Size976.0 MB 141.5 MB
Events in quadrant A5,820,8251,145,453
Events in quadrant B4,941,2991,167,881
Events in quadrant C4,878,3921,103,492
Events in quadrant D21,451,340368,572

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02100
C02100
D02100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233573
B0214102
C0206172
D0707252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10216970.949491%
B10216650.636257%
C1021660.058731%
D10216739472.376664%

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 13083 10218 61 61 0.47% 0.60%
B 13083 10218 27 27 0.21% 0.26%
C 13083 10218 4 4 0.03% 0.04%
D 13083 10216 6161 6161 47.09% 60.31%

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 10 83 643388 2727.89 1158 1134 235.4
A 0 8 505109 2140.57 1158 1134 235.4
A 13 248 195464 825.39 1158 1134 235.4
B 4 171 232073 1030.66 1149 1115 224.1
B 5 200 60703 265.91 1149 1115 224.1
B 0 230 36546 158.11 1149 1115 224.1
C 15 214 413938 1574.82 1125 1132 262.1
C 14 254 30685 112.74 1125 1132 262.1
C 3 233 14852 52.34 1125 1132 262.1
D 2 16 13876737 64959.71 861 837 213.6
D 12 235 2439159 11414.95 861 837 213.6
D 2 249 519357 2427.44 861 837 213.6

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