ASTROSAT CZTI

Data Quality Report

Orbit 22745

Creation date: 2024-06-27T18:45:08.019640
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_007T01_9000003362_22745cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22745cztM0_level2_quad_clean.evt
Size (bytes)455,328,00093,346,560
Size434.2 MB 89.0 MB
Events in quadrant A3,131,394601,406
Events in quadrant B3,253,076603,526
Events in quadrant C3,158,308578,212
Events in quadrant D3,786,972572,231

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01431
B01422
C01444
D01444

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014540737
B014790776
C014560741
D016828961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031
B030
C030
D031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6756220.325636%
B6756380.562463%
C6750630.933333%
D67541221.806337%

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 7494 6818 0 0 0.00% 0.00%
B 7494 6825 3 3 0.04% 0.04%
C 7494 6805 4 4 0.05% 0.06%
D 7495 6813 81 81 1.08% 1.19%

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 0 243 13349 77.17 806 788 162.8
A 13 254 12985 74.94 806 788 162.8
A 0 226 7135 38.99 806 788 162.8
B 0 228 38167 243.4 803 782 153.6
B 0 190 32649 207.47 803 782 153.6
B 0 230 27198 171.98 803 782 153.6
C 14 238 119593 658.65 768 772 180.4
C 2 16 29381 158.59 768 772 180.4
C 10 22 13405 70.03 768 772 180.4
D 12 233 280091 1484.0 777 752 188.2
D 1 52 251513 1332.18 777 752 188.2
D 12 227 94030 495.54 777 752 188.2

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