ASTROSAT CZTI

Data Quality Report

Orbit 54587

Creation date: 2025-10-31T11:22:11.339041
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_127T09_9000006520_54587cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54587cztM0_level2_quad_clean.evt
Size (bytes)469,056,96098,945,280
Size447.3 MB 94.4 MB
Events in quadrant A4,434,123660,747
Events in quadrant B3,545,074705,943
Events in quadrant C3,523,630619,989
Events in quadrant D5,356,114556,743

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176272
B0152202
C0149332
D0204532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64871792.759365%
B64871161.788192%
C64871652.543549%
D64875358.247264%

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 7578 6488 90 90 1.19% 1.39%
B 7578 6488 19 19 0.25% 0.29%
C 7578 6488 88 88 1.16% 1.36%
D 7578 6488 487 487 6.43% 7.51%

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 3 14 976100 5267.51 740 723 185.2
A 11 3 324255 1747.23 740 723 185.2
A 4 3 75321 402.87 740 723 185.2
B 10 14 194008 1227.55 734 709 157.5
B 5 172 134321 848.5 734 709 157.5
B 8 234 82080 516.75 734 709 157.5
C 4 5 246286 1238.6 718 714 198.3
C 13 3 159291 799.82 718 714 198.3
C 12 249 132647 665.43 718 714 198.3
D 7 70 1398368 7013.95 696 663 199.3
D 3 12 248697 1244.68 696 663 199.3
D 2 172 225683 1129.19 696 663 199.3

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