ASTROSAT CZTI

Data Quality Report

Orbit 51159

Creation date: 2025-03-22T10:18:16.597361
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/AS1C07_001T01_9000006454_51159cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51159cztM0_level2_quad_clean.evt
Size (bytes)656,838,72096,117,120
Size626.4 MB 91.7 MB
Events in quadrant A10,182,540494,724
Events in quadrant B4,929,188681,905
Events in quadrant C4,910,122636,438
Events in quadrant D3,770,987628,933

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349362
B0194732
C0194144
D0161052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6725221332.907063%
B67264556.764793%
C67253575.308550%
D6725891.323420%

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 8769 6724 2015 2015 22.98% 29.97%
B 8771 6726 236 236 2.69% 3.51%
C 8770 6726 298 298 3.40% 4.43%
D 8770 6727 73 73 0.83% 1.09%

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 14 254 3558857 22405.96 627 611 158.8
A 12 3 1694634 10667.11 627 611 158.8
A 12 80 1485067 9347.49 627 611 158.8
B 0 197 354503 2399.35 699 677 147.5
B 5 185 308610 2088.14 699 677 147.5
B 10 60 256032 1731.6 699 677 147.5
C 10 171 606466 3018.47 707 698 200.7
C 13 3 454445 2260.97 707 698 200.7
C 4 12 214286 1064.28 707 698 200.7
D 8 176 221029 1109.74 703 678 198.6
D 6 42 202285 1015.34 703 678 198.6
D 2 216 97959 489.93 703 678 198.6

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