ASTROSAT CZTI

Data Quality Report

Orbit 51216

Creation date: 2025-03-18T02:05:40.685307
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_51216cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51216cztM0_level2_quad_clean.evt
Size (bytes)591,425,28088,162,560
Size564.0 MB 84.1 MB
Events in quadrant A3,794,213596,625
Events in quadrant B4,305,685644,497
Events in quadrant C8,210,033461,211
Events in quadrant D5,088,338521,850

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156511
B0172871
C0287781
D0198101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63771181.850400%
B63771772.775600%
C6377164725.827191%
D63774186.554806%

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 7357 6378 62 62 0.84% 0.97%
B 7357 6377 81 81 1.10% 1.27%
C 7357 6377 1583 1583 21.52% 24.82%
D 7357 6377 347 347 4.72% 5.44%

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 3 260737 1571.5 668 652 165.5
A 8 26 193869 1167.47 668 652 165.5
A 4 142 166697 1003.29 668 652 165.5
B 8 128 260759 1828.1 666 641 142.3
B 4 170 227918 1597.29 666 641 142.3
B 10 254 223719 1567.78 666 641 142.3
C 4 12 3562278 21918.07 585 580 162.5
C 10 252 909791 5595.13 585 580 162.5
C 9 38 352941 2168.37 585 580 162.5
D 3 12 654450 3635.63 640 619 179.8
D 7 39 387967 2153.85 640 619 179.8
D 2 216 202749 1123.94 640 619 179.8

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