ASTROSAT CZTI

Data Quality Report

Orbit 20230707_A12_037T01_9000005736_level2

Creation date: 2023-07-11T12:29:01.167918
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_037T01_9000005736cztM0_level2.fits modeM0/AS1A12_037T01_9000005736cztM0_level2_quad_clean.evt
Size (bytes)671,783,040705,185,280
Size640.7 MB 672.5 MB
Events in quadrant A3,909,7383,995,150
Events in quadrant B3,883,7884,330,228
Events in quadrant C3,945,2864,109,813
Events in quadrant D3,394,3263,712,638

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015540
B015540
C015540
D015540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02167740
B01621960
C01544530
D01839910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02830
B02830
C02830
D02830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7596745585.999974%
B759756030.793682%
C75959550.072407%
D7596419382.551208%

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 102778 75966 0 0 0.00% 0.00%
B 102778 75987 0 0 0.00% 0.00%
C 102778 75974 0 0 0.00% 0.00%
D 102778 75950 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 9 19 3320 9.26 1019 954 255.5
A 7 110 3173 8.68 1019 954 255.5
A 0 29 3103 8.41 1019 954 255.5
B 2 9 3378 11.96 1027 980 200.4
B 3 80 2871 9.43 1027 980 200.4
B 3 17 2676 8.46 1027 980 200.4
C 1 81 3254 8.48 1045 975 268.7
C 1 80 3133 8.03 1045 975 268.7
C 1 65 2748 6.6 1045 975 268.7
D 7 3 2590 6.57 971 884 259.8
D 10 189 2452 6.04 971 884 259.8
D 6 38 2440 5.99 971 884 259.8

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