ASTROSAT CZTI

Data Quality Report

Orbit 59107

Creation date: 2026-08-31T04:17:44.895053
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_004T02_9000006600_59107cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59107cztM0_level2_quad_clean.evt
Size (bytes)753,177,60078,062,400
Size718.3 MB 74.4 MB
Events in quadrant A3,281,906640,883
Events in quadrant B3,558,358677,821
Events in quadrant C4,570,990594,927
Events in quadrant D15,977,4059,010

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143622
B0150222
C0179142
D0515762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6320981.550633%
B63201582.500000%
C63202153.401899%
D6319625899.034657%

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 7490 6321 65 65 0.87% 1.03%
B 7490 6321 82 82 1.09% 1.30%
C 7490 6321 119 119 1.59% 1.88%
D 7488 6318 5503 5503 73.49% 87.10%

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 333221 1917.3 698 679 173.4
A 10 251 140369 805.39 698 679 173.4
A 15 233 27824 156.5 698 679 173.4
B 5 236 269603 1832.61 691 666 146.8
B 4 236 148560 1007.79 691 666 146.8
B 0 197 112508 762.12 691 666 146.8
C 3 233 1515109 7953.9 680 671 190.4
C 13 3 141411 739.17 680 671 190.4
C 7 2 89288 465.42 680 671 190.4
D 12 1 14838106 473457.15 102 97 31.3
D 1 27 272223 8683.11 102 97 31.3
D 2 249 192407 6136.3 102 97 31.3

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