ASTROSAT CZTI

Data Quality Report

Orbit 59190

Creation date: 2026-09-07T11:18:48.903346
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_59190cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59190cztM0_level2_quad_clean.evt
Size (bytes)1,782,892,800235,696,320
Size1.7 GB 224.8 MB
Events in quadrant A8,876,1761,738,770
Events in quadrant B9,730,4201,827,214
Events in quadrant C9,377,6371,634,660
Events in quadrant D36,596,102673,014

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0392363
B0415313
C0405943
D01211903

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183043301.802885%
B183045813.174170%
C183043561.944930%
D183041122861.341783%

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 19749 18307 21 21 0.11% 0.11%
B 19749 18307 104 104 0.53% 0.57%
C 19749 18307 79 79 0.40% 0.43%
D 19749 18307 10998 10998 55.69% 60.08%

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 533912 1080.51 2042 1994 492.3
A 15 233 181524 364.69 2042 1994 492.3
A 10 251 162249 325.53 2042 1994 492.3
B 4 171 751585 1741.36 2006 1926 430.5
B 5 248 192831 443.45 2006 1926 430.5
B 4 236 164080 376.66 2006 1926 430.5
C 9 38 608738 1128.85 1981 1966 537.5
C 3 233 245657 453.37 1981 1966 537.5
C 13 3 180831 332.76 1981 1966 537.5
D 12 110 27392550 59671.9 1627 1554 459.0
D 11 129 908817 1976.49 1627 1554 459.0
D 3 13 742134 1613.37 1627 1554 459.0

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