ASTROSAT CZTI

Data Quality Report

Orbit 53787

Creation date: 2025-09-07T05:14:23.082597
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_022T04_9000006506_53787cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53787cztM0_level2_quad_clean.evt
Size (bytes)971,856,00068,952,960
Size926.8 MB 65.8 MB
Events in quadrant A17,036,5701,618
Events in quadrant B3,706,165665,729
Events in quadrant C8,952,284443,621
Events in quadrant D5,765,569512,808

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0552541
B0158771
C0311871
D0218561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6647663599.819467%
B6647991.489394%
C6647186928.117948%
D664775011.283286%

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 7667 6648 6258 6258 81.62% 94.13%
B 7667 6648 58 58 0.76% 0.87%
C 7667 6648 1795 1795 23.41% 27.00%
D 7667 6648 705 705 9.20% 10.60%

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 63 15994351 436095.92 137 133 36.7
A 3 78 317291 8647.58 137 133 36.7
A 5 241 67047 1824.47 137 133 36.7
B 5 250 393305 2692.48 683 658 145.8
B 0 213 222771 1523.09 683 658 145.8
B 5 185 163696 1117.99 683 658 145.8
C 1 241 3223983 20063.35 576 570 160.7
C 15 224 2512256 15633.38 576 570 160.7
C 4 5 320991 1994.38 576 570 160.7
D 1 241 2556051 13804.94 638 609 185.1
D 13 153 153934 828.29 638 609 185.1
D 2 172 130575 702.1 638 609 185.1

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