ASTROSAT CZTI

Data Quality Report

Orbit 25984

Creation date: 2024-06-27T19:23:31.803333
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_068T01_9000003760_25984cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25984cztM0_level2_quad_clean.evt
Size (bytes)427,728,96086,385,600
Size407.9 MB 82.4 MB
Events in quadrant A2,924,646571,426
Events in quadrant B2,963,875563,664
Events in quadrant C2,926,651530,520
Events in quadrant D3,737,875538,410

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122900
B0124950
C0124230
D0149820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5896540.915875%
B5896661.119403%
C5897901.526200%
D58971031.746651%

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 7036 5897 0 0 0.00% 0.00%
B 7036 5897 0 0 0.00% 0.00%
C 7037 5898 0 0 0.00% 0.00%
D 7037 5898 83 83 1.18% 1.41%

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 13 254 8491 50.84 759 743 152.4
A 3 137 6820 39.87 759 743 152.4
A 0 226 6537 38.01 759 743 152.4
B 0 190 44911 311.83 743 724 141.7
B 0 229 19624 133.38 743 724 141.7
B 12 111 16866 113.92 743 724 141.7
C 14 238 116553 700.8 706 712 165.3
C 3 233 34581 204.9 706 712 165.3
C 0 207 24520 144.03 706 712 165.3
D 1 52 643168 3692.01 724 705 174.0
D 12 233 227210 1301.65 724 705 174.0
D 10 230 58365 331.35 724 705 174.0

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