ASTROSAT CZTI

Data Quality Report

Orbit 15152

Creation date: 2024-06-27T17:04:45.809089
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/AS1G08_035T01_9000002234_15152cztM0_level2.evt modeM0/AS1G08_035T01_9000002234_15152cztM0_level2_quad_clean.evt
Size (bytes)54,838,08013,711,680
Size52.3 MB 13.1 MB
Events in quadrant A376,06393,267
Events in quadrant B416,46994,594
Events in quadrant C463,03191,017
Events in quadrant D362,16987,345

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015581
B016851
C018621
D014391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58381.372213%
B583142.401372%
C58381.372213%
D58371.200686%

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 584 584 0 0 0.00% 0.00%
B 584 584 4 4 0.68% 0.68%
C 584 584 4 4 0.68% 0.68%
D 584 584 4 4 0.68% 0.68%

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 15 239 12438 607.79 90 88 20.3
A 13 248 8620 419.89 90 88 20.3
A 12 189 4631 223.58 90 88 20.3
B 0 229 38566 2000.75 89 86 19.2
B 4 48 9596 494.47 89 86 19.2
B 0 189 8251 424.53 89 86 19.2
C 3 233 131791 6033.42 84 84 21.8
C 13 61 564 21.99 84 84 21.8
C 3 187 209 5.73 84 84 21.8
D 10 70 19628 853.41 86 84 22.9
D 12 222 3103 131.83 86 84 22.9
D 2 16 2942 124.8 86 84 22.9

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