ASTROSAT CZTI

Data Quality Report

Orbit 53531

Creation date: 2025-08-21T18:51:10.067825
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/AS1A14_004T04_9000006500_53531cztM0_level2.fits modeM0/AS1A14_004T04_9000006500_53531cztM0_level2_quad_clean.evt
Size (bytes)1,272,447,360148,345,920
Size1.2 GB 141.5 MB
Events in quadrant A8,864,7221,093,757
Events in quadrant B6,018,7221,187,068
Events in quadrant C22,722,177462,181
Events in quadrant D8,644,726985,630

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0338752
B0256192
C0750742
D0333362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110227737.013246%
B110224183.792415%
C11022693762.937761%
D110237376.686020%

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 12717 11022 512 512 4.03% 4.65%
B 12717 11022 164 164 1.29% 1.49%
C 12717 11023 6455 6455 50.76% 58.56%
D 12718 11024 525 525 4.13% 4.76%

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 3 62 1785202 5817.75 1223 1192 306.6
A 15 174 1241501 4044.71 1223 1192 306.6
A 3 63 749323 2439.69 1223 1192 306.6
B 2 249 613403 2386.74 1206 1163 256.5
B 5 185 232457 901.67 1206 1163 256.5
B 10 28 105077 405.09 1206 1163 256.5
C 7 64 10649387 46888.63 812 804 227.1
C 1 241 3542227 15593.86 812 804 227.1
C 9 38 3162044 13919.81 812 804 227.1
D 12 1 643433 1879.81 1191 1139 341.7
D 6 239 641053 1872.85 1191 1139 341.7
D 12 2 495277 1446.2 1191 1139 341.7

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