ASTROSAT CZTI

Data Quality Report

Orbit 57547

Creation date: 2026-05-18T07:21:47.161109
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_57547cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57547cztM0_level2_quad_clean.evt
Size (bytes)1,308,093,120221,080,320
Size1.2 GB 210.8 MB
Events in quadrant A8,878,4211,431,806
Events in quadrant B9,615,8111,462,469
Events in quadrant C15,571,8261,264,065
Events in quadrant D12,873,9171,215,111

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0406093
B0421453
C0597693
D0515975

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191352271.186308%
B191353521.839561%
C19135191910.028743%
D1913411235.869133%

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 20748 19419 84 84 0.40% 0.43%
B 20748 19419 82 82 0.40% 0.42%
C 20748 19419 1526 1526 7.35% 7.86%
D 20746 19419 1089 1089 5.25% 5.61%

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 525450 1026.22 2055 1999 510.1
A 3 14 234562 455.94 2055 1999 510.1
A 4 159 60021 113.75 2055 1999 510.1
B 4 206 692215 1575.08 2030 1946 438.2
B 4 201 167334 377.39 2030 1946 438.2
B 5 185 148126 333.56 2030 1946 438.2
C 12 254 3731932 7243.24 1905 1889 515.0
C 15 224 2460026 4773.37 1905 1889 515.0
C 10 22 727202 1408.46 1905 1889 515.0
D 15 142 3361823 6183.9 1939 1849 543.3
D 2 31 416743 763.6 1939 1849 543.3
D 15 94 373207 683.47 1939 1849 543.3

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