ASTROSAT CZTI

Data Quality Report

Orbit 58728

Creation date: 2026-08-05T18:57:39.714404
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_58728cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58728cztM0_level2_quad_clean.evt
Size (bytes)3,792,355,200655,223,040
Size3.5 GB 624.9 MB
Events in quadrant A38,443,3384,243,131
Events in quadrant B33,337,1164,500,621
Events in quadrant C23,458,1604,234,171
Events in quadrant D41,564,8713,674,917

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145358141
B0131406116
C0103966124
D0155961206

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09382
B09380
C09380
D09382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4640526265.658873%
B4639733827.289264%
C463967381.590654%
D46393484310.439075%

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 50111 46419 1909 1909 3.81% 4.11%
B 50111 46420 1908 1908 3.81% 4.11%
C 50112 46420 501 501 1.00% 1.08%
D 50112 46412 4656 4656 9.29% 10.03%

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 16937935 13819.71 5005 4880 1225.3
A 10 17 1027539 834.63 5005 4880 1225.3
A 4 249 466618 376.84 5005 4880 1225.3
B 5 172 7663288 7336.56 4894 4703 1043.9
B 6 255 1961429 1874.45 4894 4703 1043.9
B 8 234 1439115 1374.1 4894 4703 1043.9
C 4 5 1003329 747.54 4944 4903 1335.6
C 13 3 846216 629.91 4944 4903 1335.6
C 14 254 700975 521.16 4944 4903 1335.6
D 11 129 15970094 12013.59 4738 4531 1329.0
D 2 62 1849360 1388.18 4738 4531 1329.0
D 8 160 1566073 1175.01 4738 4531 1329.0

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