ASTROSAT CZTI

Data Quality Report

Orbit 58072

Creation date: 2026-06-22T14:40:12.414755
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_031T01_9000006584_58072cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_58072cztM0_level2_quad_clean.evt
Size (bytes)707,662,08093,594,240
Size674.9 MB 89.3 MB
Events in quadrant A3,580,436657,595
Events in quadrant B6,194,065690,857
Events in quadrant C4,044,683627,088
Events in quadrant D11,838,628374,868

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156422
B0233562
C0167832
D0400034

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69402283.285303%
B69404516.498559%
C69402583.717579%
D6939299843.205073%

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 7835 6941 87 87 1.11% 1.25%
B 7835 6940 264 264 3.37% 3.80%
C 7835 6940 138 138 1.76% 1.99%
D 7834 6940 2624 2624 33.50% 37.81%

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 10 251 477695 2511.22 777 755 189.9
A 3 245 30872 158.57 777 755 189.9
A 3 61 28339 145.24 777 755 189.9
B 10 128 2890350 17810.47 756 728 162.2
B 5 172 80717 493.02 756 728 162.2
B 4 201 40997 248.2 756 728 162.2
C 12 252 686458 3360.87 751 743 204.0
C 12 254 134456 655.36 751 743 204.0
C 15 201 93114 452.73 751 743 204.0
D 12 110 6525862 36028.55 637 609 181.1
D 12 1 1268656 7001.4 637 609 181.1
D 2 249 616796 3402.21 637 609 181.1

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