ASTROSAT CZTI

Data Quality Report

Orbit 53779

Creation date: 2025-09-06T19:51:11.860354
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_022T04_9000006506_53779cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53779cztM0_level2_quad_clean.evt
Size (bytes)1,049,299,20082,333,440
Size1000.7 MB 78.5 MB
Events in quadrant A19,137,0037,065
Events in quadrant B5,052,176745,710
Events in quadrant C7,633,163605,140
Events in quadrant D6,442,097615,500

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062114183
B02019452
C02797769
D02441072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7458740499.275945%
B74613174.248760%
C7462107214.366122%
D74635577.463487%

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 7482 7478 7327 7327 97.93% 97.98%
B 7482 7476 197 197 2.63% 2.64%
C 7483 7475 982 982 13.12% 13.14%
D 7483 7478 565 565 7.55% 7.56%

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 63 17885501 250754.25 282 274 71.3
A 15 174 54976 766.93 282 274 71.3
A 4 249 17977 248.2 282 274 71.3
B 5 250 1151832 6650.81 800 769 173.1
B 4 171 193383 1112.92 800 769 173.1
B 8 234 145571 836.66 800 769 173.1
C 15 224 2687509 13126.73 746 740 204.7
C 15 147 774461 3780.16 746 740 204.7
C 15 158 388481 1894.38 746 740 204.7
D 10 172 1072748 4836.28 780 746 221.7
D 1 241 925969 4174.1 780 746 221.7
D 2 249 489510 2205.03 780 746 221.7

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