ASTROSAT CZTI

Data Quality Report

Orbit 58856

Creation date: 2026-08-14T13:30:06.667754
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_106T01_9000006596_58856cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58856cztM0_level2_quad_clean.evt
Size (bytes)916,704,000180,552,960
Size874.2 MB 172.2 MB
Events in quadrant A12,995,978944,011
Events in quadrant B6,940,3981,313,902
Events in quadrant C6,520,8271,185,756
Events in quadrant D6,464,7171,121,664

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0479873
B0297603
C0287384
D0284783

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13037314924.154330%
B130384033.090965%
C130371331.020173%
D13037890.682672%

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 14857 13038 1990 1990 13.39% 15.26%
B 14858 13040 181 181 1.22% 1.39%
C 14857 13040 86 86 0.58% 0.66%
D 14857 13040 29 29 0.20% 0.22%

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 3 95 4729259 15881.47 1208 1180 297.7
A 14 238 1391397 4669.7 1208 1180 297.7
A 3 244 1006466 3376.72 1208 1180 297.7
B 5 185 502484 1659.87 1426 1373 301.9
B 4 201 212957 700.85 1426 1373 301.9
B 5 172 154658 507.74 1426 1373 301.9
C 6 223 180765 464.73 1411 1399 386.0
C 14 254 165570 425.36 1411 1399 386.0
C 12 249 165327 424.73 1411 1399 386.0
D 11 129 338766 838.35 1411 1346 402.5
D 15 238 136905 336.81 1411 1346 402.5
D 5 38 135158 332.47 1411 1346 402.5

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