ASTROSAT CZTI

Data Quality Report

Orbit 02261

Creation date: 2026-03-07T11:29:52.092257
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/AS1G02_018T08_9000000346_02261cztM0_level2.fits modeM0/AS1G02_018T08_9000000346_02261cztM0_level2_quad_clean.evt
Size (bytes)398,260,800127,388,160
Size379.8 MB 121.5 MB
Events in quadrant A3,590,633843,704
Events in quadrant B3,560,820871,946
Events in quadrant C3,643,667831,152
Events in quadrant D3,346,044773,497

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161012
B0160122
C0161282
D0158192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7721400.518068%
B7721460.595778%
C7721360.466261%
D7721190.246082%

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 9161 7723 0 0 0.00% 0.00%
B 9161 7723 1 1 0.01% 0.01%
C 9161 7723 1 1 0.01% 0.01%
D 9161 7723 0 0 0.00% 0.00%

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 8 113976 603.15 902 880 187.5
A 12 194 10256 50.0 902 880 187.5
A 0 226 9590 46.45 902 880 187.5
B 3 220 14127 74.69 918 892 177.2
B 12 111 13438 70.8 918 892 177.2
B 11 111 11410 59.35 918 892 177.2
C 5 234 123568 592.37 883 883 207.1
C 0 64 45280 214.36 883 883 207.1
C 2 53 10211 45.04 883 883 207.1
D 9 66 29992 139.77 871 848 208.5
D 15 194 15818 71.79 871 848 208.5
D 14 226 9795 42.91 871 848 208.5

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