ASTROSAT CZTI

Data Quality Report

Orbit 20191227_A07_062T01_9000003392_level2

Creation date: 2025-12-07T22:27:53.668602
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/AS1A07_062T01_9000003392cztM0_level2.fits modeM0/AS1A07_062T01_9000003392cztM0_level2_quad_clean.evt
Size (bytes)574,084,800474,330,240
Size547.5 MB 452.4 MB
Events in quadrant A3,557,0982,735,893
Events in quadrant B3,431,1482,725,878
Events in quadrant C3,419,9302,565,035
Events in quadrant D2,995,8862,354,359

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011840
B011840
C011840
D011840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01207050
B01211570
C01221990
D01371260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A580524350.749328%
B580525580.961207%
C580529801.688142%
D5805211431.968924%

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 69232 58051 0 0 0.00% 0.00%
B 69232 58050 0 0 0.00% 0.00%
C 69232 58051 0 0 0.00% 0.00%
D 69232 58039 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 3431 11.1 925 870 230.7
A 7 110 2791 8.33 925 870 230.7
A 9 19 2723 8.03 925 870 230.7
B 2 9 2819 11.04 906 868 176.8
B 3 80 2342 8.34 906 868 176.8
B 2 8 2296 8.08 906 868 176.8
C 12 241 2474 7.04 905 850 230.8
C 3 126 2340 6.46 905 850 230.8
C 3 187 2271 6.16 905 850 230.8
D 3 14 2163 6.06 854 778 228.5
D 6 231 2140 5.96 854 778 228.5
D 7 3 2130 5.92 854 778 228.5

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