ASTROSAT CZTI

Data Quality Report

Orbit 20161128_G06_151T01_9000000836_level2

Creation date: 2025-11-08T00:31:11.350403
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/AS1G06_151T01_9000000836cztM0_level2.fits modeM0/AS1G06_151T01_9000000836cztM0_level2_quad_clean.evt
Size (bytes)559,483,200541,391,040
Size533.6 MB 516.3 MB
Events in quadrant A3,417,2803,272,668
Events in quadrant B3,267,4363,183,756
Events in quadrant C3,353,0963,109,815
Events in quadrant D2,731,6302,658,026

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01291940
B01461480
C01252660
D02061240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030
B01030
C01030
D01030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012360
B012360
C012360
D012360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A608256961.144266%
B6082524354.003288%
C608253990.655980%
D60825626310.296753%

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 70870 60791 0 0 0.00% 0.00%
B 70870 60797 0 0 0.00% 0.00%
C 70870 60822 0 0 0.00% 0.00%
D 70870 60684 0 0 0.00% 0.00%

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 0 29 3415 11.45 888 829 225.8
A 7 110 2981 9.53 888 829 225.8
A 0 30 2637 8.01 888 829 225.8
B 2 9 2745 10.94 861 817 176.3
B 12 226 2260 8.19 861 817 176.3
B 5 128 2207 7.88 861 817 176.3
C 12 241 2518 7.14 885 818 238.0
C 1 80 2427 6.76 885 818 238.0
C 1 81 2383 6.58 885 818 238.0
D 7 5 2070 6.42 779 704 212.8
D 6 231 2051 6.33 779 704 212.8
D 3 14 2045 6.3 779 704 212.8

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