ASTROSAT CZTI

Data Quality Report

Orbit 57457

Creation date: 2026-05-12T05:17:46.171061
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_113T09_9000006574_57457cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57457cztM0_level2_quad_clean.evt
Size (bytes)578,286,72098,959,680
Size551.5 MB 94.4 MB
Events in quadrant A3,492,878643,571
Events in quadrant B5,392,190665,485
Events in quadrant C6,110,420573,188
Events in quadrant D5,791,742559,252

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165090
B0217230
C0236710
D0228660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7978240.300827%
B79786588.247681%
C79774035.052025%
D79773654.575655%

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 8253 8253 6 6 0.07% 0.07%
B 8253 8253 316 316 3.83% 3.83%
C 8252 8250 346 346 4.19% 4.19%
D 8252 8252 313 313 3.79% 3.79%

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 13 153 33436 151.97 875 850 214.4
A 3 128 26117 117.84 875 850 214.4
A 4 78 26071 117.62 875 850 214.4
B 4 206 1652452 9174.28 840 809 180.0
B 10 247 119761 660.74 840 809 180.0
B 5 185 119502 659.3 840 809 180.0
C 15 224 2269937 10132.92 826 816 223.9
C 14 254 124122 550.63 826 816 223.9
C 14 245 97116 430.03 826 816 223.9
D 3 12 880919 3789.56 829 792 232.3
D 2 249 553121 2378.16 829 792 232.3
D 8 240 396452 1703.59 829 792 232.3

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