ASTROSAT CZTI

Data Quality Report

Orbit 57838

Creation date: 2026-06-06T21:12:22.621916
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_125T11_9000006582_57838cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57838cztM0_level2_quad_clean.evt
Size (bytes)1,715,653,440240,163,200
Size1.6 GB 229.0 MB
Events in quadrant A9,003,8441,729,577
Events in quadrant B9,558,7481,827,418
Events in quadrant C27,136,1421,063,550
Events in quadrant D16,376,0481,373,099

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0406013
B0417493
C0934893
D0612783

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185335012.703286%
B185335613.027033%
C18533686937.063616%
D18533228412.323963%

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 19643 18536 184 184 0.94% 0.99%
B 19643 18536 160 160 0.81% 0.86%
C 19643 18535 5371 5371 27.34% 28.98%
D 19643 18536 1995 1995 10.16% 10.76%

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 10 251 813674 1659.28 1984 1932 489.2
A 3 245 383162 779.27 1984 1932 489.2
A 4 3 76182 151.77 1984 1932 489.2
B 2 249 684017 1653.33 1949 1875 412.6
B 5 185 417019 1006.2 1949 1875 412.6
B 10 247 160424 384.28 1949 1875 412.6
C 9 38 16072574 36656.13 1612 1592 438.4
C 15 224 4089226 9323.44 1612 1592 438.4
C 14 254 225364 510.4 1612 1592 438.4
D 12 110 6708790 12697.7 1864 1780 528.2
D 3 224 654906 1236.5 1864 1780 528.2
D 2 62 287968 541.81 1864 1780 528.2

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