ASTROSAT CZTI

Data Quality Report

Orbit 58512

Creation date: 2026-07-22T04:09:29.533645
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_044T04_9000006592_58512cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58512cztM0_level2_quad_clean.evt
Size (bytes)444,026,88097,283,520
Size423.5 MB 92.8 MB
Events in quadrant A3,511,798637,663
Events in quadrant B3,391,581703,195
Events in quadrant C3,776,496606,386
Events in quadrant D5,257,866550,970

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149182
B0143742
C0157972
D0200932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64132233.477312%
B64131362.120692%
C64132563.991891%
D64134707.328863%

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 7613 6414 130 130 1.71% 2.03%
B 7613 6414 58 58 0.76% 0.90%
C 7613 6414 200 200 2.63% 3.12%
D 7613 6414 457 457 6.00% 7.13%

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 80 461737 2596.92 717 699 177.5
A 10 17 119325 668.19 717 699 177.5
A 3 14 34852 192.38 717 699 177.5
B 7 252 131573 848.62 721 694 154.2
B 4 171 126869 818.12 721 694 154.2
B 5 185 75030 482.0 721 694 154.2
C 4 5 628909 3280.74 697 691 191.5
C 13 3 212678 1107.06 697 691 191.5
C 12 249 57856 298.53 697 691 191.5
D 3 12 1269605 6539.04 674 643 194.1
D 2 153 553571 2849.27 674 643 194.1
D 8 240 408786 2103.19 674 643 194.1

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