ASTROSAT CZTI

Data Quality Report

Orbit 56507

Creation date: 2026-03-09T06:27:38.504929
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_060T01_9000006556_56507cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56507cztM0_level2_quad_clean.evt
Size (bytes)397,733,76095,693,760
Size379.3 MB 91.3 MB
Events in quadrant A3,283,437628,284
Events in quadrant B3,555,493680,531
Events in quadrant C3,476,868598,481
Events in quadrant D3,917,500551,211

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141952
B0148343
C0148032
D0160282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6295470.746624%
B62941141.811249%
C62941161.843025%
D62941963.114077%

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 7515 6296 18 18 0.24% 0.29%
B 7514 6295 49 49 0.65% 0.78%
C 7514 6295 111 111 1.48% 1.76%
D 7514 6295 176 176 2.34% 2.80%

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 210187 1210.51 699 682 173.1
A 3 14 185277 1066.58 699 682 173.1
A 7 64 68723 393.14 699 682 173.1
B 4 206 413609 2762.15 697 671 149.5
B 4 171 81811 542.75 697 671 149.5
B 5 236 54200 358.06 697 671 149.5
C 13 3 496250 2640.97 680 673 187.6
C 9 237 121187 642.23 680 673 187.6
C 12 252 82291 434.95 680 673 187.6
D 2 249 391562 2053.28 666 638 190.4
D 3 12 356718 1870.27 666 638 190.4
D 12 16 280811 1471.57 666 638 190.4

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