ASTROSAT CZTI

Data Quality Report

Orbit 59271

Creation date: 2026-09-11T05:31:28.740366
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_59271cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59271cztM0_level2_quad_clean.evt
Size (bytes)716,797,440109,992,960
Size683.6 MB 104.9 MB
Events in quadrant A3,542,128777,718
Events in quadrant B3,872,346838,389
Events in quadrant C5,532,818717,117
Events in quadrant D12,974,324449,424

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164062
B0171942
C0217052
D0439592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7885660.837032%
B78851662.105263%
C78855737.266963%
D7885334442.409639%

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 9790 7887 11 11 0.11% 0.14%
B 9790 7887 51 51 0.52% 0.65%
C 9790 7887 384 384 3.92% 4.87%
D 9790 7887 2862 2862 29.23% 36.29%

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 0 24 47348 214.53 883 860 216.7
A 3 14 19623 86.58 883 860 216.7
A 15 233 15871 69.27 883 860 216.7
B 10 247 173302 916.68 875 843 188.1
B 4 236 150662 796.34 875 843 188.1
B 0 157 52846 276.41 875 843 188.1
C 15 198 1010701 4277.85 853 845 236.1
C 12 252 720916 3050.29 853 845 236.1
C 3 233 273964 1156.96 853 845 236.1
D 12 110 8808163 40449.01 761 726 217.7
D 11 129 987075 4529.9 761 726 217.7
D 2 249 74467 338.66 761 726 217.7

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