ASTROSAT CZTI

Data Quality Report

Orbit 58736

Creation date: 2026-08-06T06:13:57.488449
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_004T06_9000006594_58736cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58736cztM0_level2_quad_clean.evt
Size (bytes)697,429,440111,600,000
Size665.1 MB 106.4 MB
Events in quadrant A3,601,867780,831
Events in quadrant B4,580,816826,373
Events in quadrant C4,780,635746,755
Events in quadrant D12,221,331458,724

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017101305
B019666118
C020202144
D042621680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01662
B01660
C01662
D01664

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8131140.172181%
B81642262.768251%
C81571852.267991%
D8113313038.580057%

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 8291 8171 2 2 0.02% 0.02%
B 8295 8195 93 93 1.12% 1.13%
C 8295 8186 203 203 2.45% 2.48%
D 8294 8152 3037 3037 36.62% 37.25%

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 14 73745 326.44 889 864 223.3
A 15 233 57232 252.47 889 864 223.3
A 13 254 14690 61.93 889 864 223.3
B 8 234 688420 3655.72 879 845 188.1
B 6 255 96287 507.45 879 845 188.1
B 4 201 63823 334.84 879 845 188.1
C 13 3 437341 1828.39 871 861 238.7
C 6 223 346711 1448.74 871 861 238.7
C 12 252 150842 628.26 871 861 238.7
D 11 129 8808720 43584.15 712 679 202.1
D 8 160 182424 899.31 712 679 202.1
D 2 249 172180 848.62 712 679 202.1

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