ASTROSAT CZTI

Data Quality Report

Orbit 52488

Creation date: 2025-06-25T19:05:00.076614
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/AS1A13_037T01_9000006476_52488cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52488cztM0_level2_quad_clean.evt
Size (bytes)1,057,412,16082,897,920
Size1008.4 MB 79.1 MB
Events in quadrant A4,806,556700,721
Events in quadrant B4,061,909781,980
Events in quadrant C10,089,321482,490
Events in quadrant D19,581,2362,800

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01981586
B01757892
C035707333
D0646691124

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78183364.297774%
B7809881.126905%
C7777248131.901762%
D7714768999.675914%

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 7866 7853 221 221 2.81% 2.81%
B 7866 7845 55 55 0.70% 0.70%
C 7865 7833 1953 1953 24.83% 24.93%
D 7864 7731 7403 7403 94.14% 95.76%

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 8 26 710149 3451.9 829 807 205.5
A 3 45 212118 1028.31 829 807 205.5
A 13 248 128980 623.73 829 807 205.5
B 10 44 191134 1054.4 828 799 180.5
B 10 254 150985 831.99 828 799 180.5
B 10 247 134116 738.54 828 799 180.5
C 15 224 5627796 31317.22 660 657 179.7
C 15 231 530017 2946.09 660 657 179.7
C 2 12 323442 1796.42 660 657 179.7
D 15 93 18024469 315605.5 196 187 57.1
D 6 42 479974 8401.08 196 187 57.1
D 12 17 59546 1039.38 196 187 57.1

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