ASTROSAT CZTI

Data Quality Report

Orbit 58085

Creation date: 2026-06-23T12:18:16.407492
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_031T01_9000006584_58085cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_58085cztM0_level2_quad_clean.evt
Size (bytes)1,906,303,680240,238,080
Size1.8 GB 229.1 MB
Events in quadrant A11,175,1461,677,778
Events in quadrant B28,473,3361,282,762
Events in quadrant C9,083,4871,661,541
Events in quadrant D20,291,7661,276,980

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0479134
B0985293
C0421803
D0738303

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04040
B04040
C04040
D04040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1994710585.304056%
B19948690534.614999%
C199483201.604171%
D19948341217.104472%

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 21313 20128 568 568 2.67% 2.82%
B 21314 20127 5140 5140 24.12% 25.54%
C 21314 20130 34 34 0.16% 0.17%
D 21314 20127 3517 3517 16.50% 17.47%

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 2467849 4634.37 2198 2142 532.0
A 3 245 116727 215.37 2198 2142 532.0
A 13 254 31517 55.21 2198 2142 532.0
B 10 128 19796708 48525.62 1892 1816 407.9
B 5 172 402169 981.43 1892 1816 407.9
B 4 201 177270 430.11 1892 1816 407.9
C 12 254 177215 299.68 2168 2151 584.2
C 12 252 163060 275.45 2168 2151 584.2
C 6 223 133050 224.07 2168 2151 584.2
D 12 110 9924741 17172.0 2067 1978 577.8
D 12 1 1057818 1827.2 2067 1978 577.8
D 8 160 364538 627.43 2067 1978 577.8

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