ASTROSAT CZTI

Data Quality Report

Orbit 58399

Creation date: 2026-07-14T14:59:23.637968
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_045T01_9000006590_58399cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58399cztM0_level2_quad_clean.evt
Size (bytes)716,644,80097,735,680
Size683.4 MB 93.2 MB
Events in quadrant A7,218,695563,557
Events in quadrant B4,182,388719,162
Events in quadrant C7,419,862570,705
Events in quadrant D7,143,001598,863

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264522
B0173422
C0270863
D0264062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7280160322.019231%
B72815237.183079%
C7280134918.530220%
D72804486.153846%

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 8845 7282 963 963 10.89% 13.22%
B 8846 7283 146 146 1.65% 2.00%
C 8845 7282 822 822 9.29% 11.29%
D 8845 7282 150 150 1.70% 2.06%

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 2602845 13356.0 790 770 194.8
A 12 80 1224100 6279.14 790 770 194.8
A 13 248 151044 771.33 790 770 194.8
B 6 255 373155 2068.3 830 799 180.0
B 4 201 127463 703.57 830 799 180.0
B 2 249 85885 472.62 830 799 180.0
C 6 223 2455925 11830.14 758 751 207.5
C 9 38 989557 4764.51 758 751 207.5
C 5 10 532999 2564.61 758 751 207.5
D 5 113 2923128 12891.2 805 769 226.7
D 8 240 576376 2539.13 805 769 226.7
D 11 129 183624 806.62 805 769 226.7

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