ASTROSAT CZTI

Data Quality Report

Orbit 54458

Creation date: 2025-10-22T09:44:17.838431
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_126T19_9000006518_54458cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54458cztM0_level2_quad_clean.evt
Size (bytes)506,404,80098,959,680
Size482.9 MB 94.4 MB
Events in quadrant A4,820,334642,399
Events in quadrant B3,288,888711,704
Events in quadrant C4,005,568629,124
Events in quadrant D6,108,020544,153

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190482
B0148682
C0167042
D0228512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67303675.453195%
B67301101.634473%
C67311832.718764%
D673172310.741346%

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 9020 6732 255 255 2.83% 3.79%
B 9020 6732 27 27 0.30% 0.40%
C 9021 6733 117 117 1.30% 1.74%
D 9021 6733 619 619 6.86% 9.19%

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 8 9 1925740 10884.76 714 696 176.9
A 8 6 49592 276.47 714 696 176.9
A 4 3 32796 181.5 714 696 176.9
B 5 185 213648 1382.78 719 695 154.0
B 0 213 97664 629.65 719 695 154.0
B 10 247 62269 399.82 719 695 154.0
C 7 64 646847 3344.98 703 697 193.2
C 13 3 408469 2110.95 703 697 193.2
C 9 237 104033 534.95 703 697 193.2
D 8 176 2407922 12686.19 671 642 189.8
D 10 181 322326 1695.25 671 642 189.8
D 3 12 206832 1086.61 671 642 189.8

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