ASTROSAT CZTI

Data Quality Report

Orbit 55128

Creation date: 2025-12-06T12:51:12.415467
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_022T16_9000006532_55128cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55128cztM0_level2_quad_clean.evt
Size (bytes)1,659,545,280294,560,640
Size1.5 GB 280.9 MB
Events in quadrant A12,179,8392,013,156
Events in quadrant B9,420,9592,205,041
Events in quadrant C10,705,2771,928,205
Events in quadrant D27,483,6461,310,418

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04428
B04424
C04424
D044210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052871641
B045068653
C048685780
D097568934

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A212304932.322186%
B212231840.866984%
C212252701.272085%
D21197553126.093315%

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 25999 21335 303 303 1.17% 1.42%
B 25999 21337 48 48 0.18% 0.22%
C 25999 21320 210 210 0.81% 0.98%
D 25999 21311 5238 5238 20.15% 24.58%

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 12 115 1278872 2331.26 2227 2169 547.6
A 5 241 1072149 1953.78 2227 2169 547.6
A 0 8 1047074 1907.99 2227 2169 547.6
B 2 249 168919 350.47 2221 2136 475.9
B 0 182 124792 257.75 2221 2136 475.9
B 5 185 113402 233.81 2221 2136 475.9
C 13 3 1198667 2031.44 2165 2150 589.0
C 15 178 232479 391.05 2165 2150 589.0
C 6 223 218778 367.79 2165 2150 589.0
D 11 129 19038039 36216.52 1872 1792 525.6
D 3 176 173358 326.4 1872 1792 525.6
D 15 94 145619 273.63 1872 1792 525.6

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