ASTROSAT CZTI

Data Quality Report

Orbit 59263

Creation date: 2026-09-10T17:18:35.773720
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/AS1T05_271T01_9000006604_59263cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59263cztM0_level2_quad_clean.evt
Size (bytes)594,086,400101,721,600
Size566.6 MB 97.0 MB
Events in quadrant A3,902,881686,925
Events in quadrant B3,777,745736,051
Events in quadrant C3,659,147665,328
Events in quadrant D10,080,120479,738

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164942
B0164322
C0160962
D0350932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73551802.447315%
B73552363.208702%
C73561451.971180%
D7356204627.814029%

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 8695 7357 52 52 0.60% 0.71%
B 8695 7357 91 91 1.05% 1.24%
C 8696 7358 55 55 0.63% 0.75%
D 8696 7358 1736 1736 19.96% 23.59%

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 3 245 211020 1051.61 817 795 199.9
A 0 24 199978 996.37 817 795 199.9
A 10 251 187880 935.85 817 795 199.9
B 4 201 333917 1919.14 804 774 173.6
B 4 236 103050 589.18 804 774 173.6
B 10 247 85738 489.45 804 774 173.6
C 12 252 261753 1187.87 796 788 219.7
C 3 233 119746 541.48 796 788 219.7
C 14 254 71702 322.79 796 788 219.7
D 12 110 3825908 18819.1 715 682 203.3
D 11 129 3148386 15485.87 715 682 203.3
D 2 249 209486 1027.26 715 682 203.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct