ASTROSAT CZTI

Data Quality Report

Orbit 20200114_A08_009T01_9000003434_level2

Creation date: 2025-12-08T05:59:01.932545
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/AS1A08_009T01_9000003434cztM0_level2.fits modeM0/AS1A08_009T01_9000003434cztM0_level2_quad_clean.evt
Size (bytes)717,765,120726,168,960
Size684.5 MB 692.5 MB
Events in quadrant A4,447,8684,435,877
Events in quadrant B4,250,9824,462,556
Events in quadrant C4,330,5444,262,191
Events in quadrant D3,728,4303,853,772

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01528170
B01526060
C01667160
D01967480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190
B01200
C01200
D01200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014860
B014820
C014870
D014860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A725987301.005537%
B725948761.206711%
C7258124733.407228%
D7259035534.894614%

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 90853 72645 0 0 0.00% 0.00%
B 90853 72649 0 0 0.00% 0.00%
C 90853 72630 0 0 0.00% 0.00%
D 90853 72419 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 4117 10.67 1156 1087 284.1
A 7 110 3630 8.95 1156 1087 284.1
A 0 30 3293 7.77 1156 1087 284.1
B 2 9 3396 10.5 1126 1078 220.8
B 3 17 2791 7.76 1126 1078 220.8
B 5 128 2784 7.73 1126 1078 220.8
C 1 80 3325 7.76 1144 1074 290.0
C 1 81 3318 7.74 1144 1074 290.0
C 12 241 2918 6.36 1144 1074 290.0
D 6 231 2672 5.97 1068 974 284.5
D 10 189 2636 5.84 1068 974 284.5
D 15 46 2630 5.82 1068 974 284.5

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