ASTROSAT CZTI

Data Quality Report

Orbit 58307

Creation date: 2026-07-08T08:26:14.041947
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_044T03_9000006588_58307cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58307cztM0_level2_quad_clean.evt
Size (bytes)442,416,96086,569,920
Size421.9 MB 82.6 MB
Events in quadrant A3,229,998564,473
Events in quadrant B5,212,309558,299
Events in quadrant C3,929,749544,363
Events in quadrant D3,514,421513,879

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141761
B0198111
C0161281
D0147841

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63061051.665081%
B630774411.796417%
C63071812.869827%
D6307560.887902%

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 7602 6487 74 74 0.97% 1.14%
B 7603 6488 439 439 5.77% 6.77%
C 7603 6488 168 168 2.21% 2.59%
D 7603 6488 31 31 0.41% 0.48%

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 12 114 496360 2915.02 680 662 170.0
A 13 248 31612 182.01 680 662 170.0
A 4 238 21272 121.2 680 662 170.0
B 4 206 1535200 10997.26 647 623 139.5
B 2 249 503666 3604.97 647 623 139.5
B 0 156 251325 1796.61 647 623 139.5
C 9 38 694852 3835.45 658 652 181.0
C 12 249 359384 1981.99 658 652 181.0
C 1 12 140638 773.42 658 652 181.0
D 11 129 394276 2080.08 658 627 189.2
D 2 249 181511 955.81 658 627 189.2
D 12 110 147259 774.82 658 627 189.2

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