ASTROSAT CZTI

Data Quality Report

Orbit 56341

Creation date: 2026-02-26T03:44:54.741150
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_049T01_9000006552_56341cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56341cztM0_level2_quad_clean.evt
Size (bytes)1,888,499,520238,576,320
Size1.8 GB 227.5 MB
Events in quadrant A14,515,2821,683,323
Events in quadrant B11,180,0381,789,917
Events in quadrant C12,465,2181,574,475
Events in quadrant D30,277,090864,387

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0561904
B0470174
C0509808
D01031514

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190128754.602356%
B190128044.228908%
C1901110825.691442%
D19012885646.581107%

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 20227 19016 858 858 4.24% 4.51%
B 20227 19016 380 380 1.88% 2.00%
C 20226 19015 905 905 4.47% 4.76%
D 20226 19014 7261 7261 35.90% 38.19%

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 4 95 3034829 6088.59 1991 1942 498.1
A 3 14 754537 1510.85 1991 1942 498.1
A 7 64 351231 701.2 1991 1942 498.1
B 5 185 1004968 2401.89 1975 1901 417.6
B 0 231 770036 1839.34 1975 1901 417.6
B 0 183 659473 1574.59 1975 1901 417.6
C 12 254 1307875 2493.49 1909 1898 523.8
C 15 230 1065881 2031.46 1909 1898 523.8
C 6 223 887624 1691.11 1909 1898 523.8
D 8 129 20958034 52133.25 1390 1325 402.0
D 6 239 1240436 3082.49 1390 1325 402.0
D 2 249 538232 1335.64 1390 1325 402.0

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