ASTROSAT CZTI

Data Quality Report

Orbit 26807

Creation date: 2024-06-27T19:33:10.689640
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/AS1A09_079T01_9000003864_26807cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26807cztM0_level2_quad_clean.evt
Size (bytes)590,253,120129,309,120
Size562.9 MB 123.3 MB
Events in quadrant A4,572,687867,422
Events in quadrant B5,562,931855,379
Events in quadrant C3,609,301889,167
Events in quadrant D3,710,977871,221

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180460
B0205550
C0146520
D0149670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6197731.177989%
B6197104116.798451%
C61971282.065516%
D6197831.339358%

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 7562 6198 16 16 0.21% 0.26%
B 7562 6198 692 692 9.15% 11.16%
C 7562 6198 9 9 0.12% 0.15%
D 7562 6198 54 54 0.71% 0.87%

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 13 1309239 7902.89 846 833 165.6
A 13 254 9583 52.85 846 833 165.6
A 0 226 7438 39.89 846 833 165.6
B 0 189 2409631 16603.43 797 779 145.1
B 10 246 17667 116.4 797 779 145.1
B 12 111 16334 107.22 797 779 145.1
C 14 238 136443 694.58 849 858 195.2
C 14 176 74539 377.45 849 858 195.2
C 15 208 69284 350.53 849 858 195.2
D 1 52 344070 1729.54 853 837 198.5
D 2 250 65300 324.83 853 837 198.5
D 15 21 60567 300.98 853 837 198.5

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