ASTROSAT CZTI

Data Quality Report

Orbit 56917

Creation date: 2026-04-05T21:06:05.247957
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_083T14_9000006564_56917cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56917cztM0_level2_quad_clean.evt
Size (bytes)1,050,056,64078,491,520
Size1001.4 MB 74.9 MB
Events in quadrant A4,652,669634,040
Events in quadrant B5,924,637636,375
Events in quadrant C13,088,697479,053
Events in quadrant D14,671,876145,966

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186442
B0222832
C0436222
D0483424

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68982854.131632%
B689974110.740687%
C6899214031.018988%
D6898538978.124094%

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 7053 6901 175 175 2.48% 2.54%
B 7054 6900 464 464 6.58% 6.72%
C 7054 6902 2562 2562 36.32% 37.12%
D 7052 6897 4410 4410 62.54% 63.94%

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 7 64 1355177 7627.26 717 699 177.6
A 4 249 216378 1214.52 717 699 177.6
A 10 251 176722 991.21 717 699 177.6
B 5 172 1161914 7933.62 680 654 146.4
B 5 185 1103362 7533.6 680 654 146.4
B 10 16 509223 3474.5 680 654 146.4
C 9 38 9102705 51242.95 649 644 177.6
C 13 3 1176227 6618.32 649 644 177.6
C 14 254 174660 979.68 649 644 177.6
D 12 33 11135449 85225.06 451 430 130.7
D 2 249 821079 6281.07 451 430 130.7
D 5 222 358042 2737.09 451 430 130.7

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