ASTROSAT CZTI

Data Quality Report

Orbit 20171119_C03_020T01_9000001706_level2

Creation date: 2025-11-18T12:53:54.019676
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/AS1C03_020T01_9000001706cztM0_level2.fits modeM0/AS1C03_020T01_9000001706cztM0_level2_quad_clean.evt
Size (bytes)634,570,560595,134,720
Size605.2 MB 567.6 MB
Events in quadrant A3,609,1463,137,649
Events in quadrant B3,725,9423,484,581
Events in quadrant C3,902,4003,551,874
Events in quadrant D3,311,0323,187,444

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02668750
B01936230
C01400250
D01789140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01130
C01130
D01130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013820
B013820
C013820
D013820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A679661353719.917312%
B6796650917.490510%
C679665210.766560%
D6796634165.026042%

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 79166 67854 0 0 0.00% 0.00%
B 79166 67932 0 0 0.00% 0.00%
C 79166 67966 0 0 0.00% 0.00%
D 79166 67558 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 3418 10.75 938 874 236.6
A 7 110 2941 8.74 938 874 236.6
A 0 30 2666 7.58 938 874 236.6
B 2 9 3239 11.64 984 937 197.8
B 5 128 2517 7.99 984 937 197.8
B 14 254 2497 7.89 984 937 197.8
C 1 80 2918 7.4 1028 953 265.7
C 1 81 2840 7.1 1028 953 265.7
C 12 241 2703 6.59 1028 953 265.7
D 3 14 2517 6.52 945 855 254.8
D 3 31 2389 6.02 945 855 254.8
D 3 159 2340 5.83 945 855 254.8

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