ASTROSAT CZTI

Data Quality Report

Orbit 59230

Creation date: 2026-09-08T11:36:05.938499
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/AS1T05_271T01_9000006604_59230cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59230cztM0_level2_quad_clean.evt
Size (bytes)542,874,240119,232,000
Size517.7 MB 113.7 MB
Events in quadrant A3,827,577782,877
Events in quadrant B3,768,502843,484
Events in quadrant C5,763,581733,060
Events in quadrant D6,097,451679,566

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175310
B0172420
C0227120
D0237800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8224390.474222%
B8224420.510700%
C82253314.024316%
D82254275.191489%

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 8224 8224 33 33 0.40% 0.40%
B 8224 8224 34 34 0.41% 0.41%
C 8225 8225 269 269 3.27% 3.27%
D 8225 8225 396 396 4.81% 4.81%

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 10 251 174336 796.63 885 862 217.8
A 0 24 148932 679.97 885 862 217.8
A 14 238 35722 160.09 885 862 217.8
B 4 201 78367 407.94 880 847 190.0
B 10 247 59682 309.61 880 847 190.0
B 4 236 48438 250.44 880 847 190.0
C 12 252 662442 2829.9 855 849 233.8
C 5 250 524616 2240.36 855 849 233.8
C 3 233 508999 2173.56 855 849 233.8
D 12 110 2205215 9238.98 846 812 238.6
D 11 129 285693 1193.98 846 812 238.6
D 8 240 113092 470.58 846 812 238.6

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

TCT plots

Parameter TCT0 TCT_healed
Tct