ASTROSAT CZTI

Data Quality Report

Orbit 42117

Creation date: 2024-06-27T22:37:06.875181
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/AS1A12_044T22_9000005750_42117cztM0_level2.fits modeM0/AS1A12_044T22_9000005750_42117cztM0_level2_quad_clean.evt
Size (bytes)345,228,48090,694,080
Size329.2 MB 86.5 MB
Events in quadrant A3,612,291603,519
Events in quadrant B2,446,322623,743
Events in quadrant C2,676,925595,526
Events in quadrant D3,605,563530,039

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145031
B0112821
C0114281
D0147091

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5624230.408962%
B562460.106686%
C562530.053333%
D56252444.337778%

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 6936 5625 7 7 0.10% 0.12%
B 6936 5625 0 0 0.00% 0.00%
C 6937 5626 0 0 0.00% 0.00%
D 6937 5626 222 222 3.20% 3.95%

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 15 222 742601 5776.21 621 607 128.5
A 10 83 462019 3591.96 621 607 128.5
A 3 137 7231 51.57 621 607 128.5
B 12 111 15881 125.32 616 598 122.0
B 11 111 14647 115.2 616 598 122.0
B 14 111 14103 110.74 616 598 122.0
C 15 214 230284 1604.26 607 611 143.2
C 8 79 77024 533.74 607 611 143.2
C 13 61 4081 24.24 607 611 143.2
D 13 249 518844 3486.72 596 578 148.6
D 12 233 441664 2967.48 596 578 148.6
D 1 52 146570 982.18 596 578 148.6

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