ASTROSAT CZTI

Data Quality Report

Orbit 56699

Creation date: 2026-03-22T05:20:29.981560
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_083T06_9000006558_56699cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56699cztM0_level2_quad_clean.evt
Size (bytes)746,830,08091,618,560
Size712.2 MB 87.4 MB
Events in quadrant A6,099,441633,308
Events in quadrant B3,822,296717,222
Events in quadrant C12,547,965307,385
Events in quadrant D4,611,696610,618

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233412
B0168523
C0424072
D0191332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A726184011.568654%
B72603034.173554%
C7260400555.165289%
D72602683.691460%

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 7726 7261 714 714 9.24% 9.83%
B 7725 7261 124 124 1.61% 1.71%
C 7725 7261 3528 3528 45.67% 48.59%
D 7725 7261 271 271 3.51% 3.73%

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 7 64 2537017 14050.25 728 710 180.5
A 8 26 346155 1913.64 728 710 180.5
A 3 62 163726 903.05 728 710 180.5
B 8 128 260614 1611.67 751 724 161.3
B 10 247 158765 980.07 751 724 161.3
B 4 236 112000 690.06 751 724 161.3
C 15 230 9788252 71347.63 500 496 137.2
C 1 28 214312 1558.61 500 496 137.2
C 13 3 178772 1299.54 500 496 137.2
D 0 160 602595 2934.15 727 693 205.1
D 2 249 323652 1574.36 727 693 205.1
D 10 199 317862 1546.13 727 693 205.1

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