ASTROSAT CZTI

Data Quality Report

Orbit 26312

Creation date: 2024-06-27T19:27:20.067140
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_008T02_9000003796_26312cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26312cztM0_level2_quad_clean.evt
Size (bytes)503,017,92080,873,280
Size479.7 MB 77.1 MB
Events in quadrant A3,004,663514,185
Events in quadrant B3,234,707523,441
Events in quadrant C3,079,850497,857
Events in quadrant D5,494,868481,709

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129730
B0136810
C0130200
D0205420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6184330.533635%
B6185651.050930%
C6185621.002425%
D618481213.130660%

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 7319 6184 0 0 0.00% 0.00%
B 7320 6185 6 6 0.08% 0.10%
C 7320 6185 0 0 0.00% 0.00%
D 7319 6184 634 634 8.66% 10.25%

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 9631 57.22 778 763 155.0
A 3 137 7047 40.55 778 763 155.0
A 0 226 6681 38.19 778 763 155.0
B 7 219 71311 480.49 777 759 146.8
B 0 230 63085 424.47 777 759 146.8
B 7 235 30287 201.1 777 759 146.8
C 14 238 121243 701.48 744 749 171.8
C 3 233 36826 210.03 744 749 171.8
C 2 16 19242 107.66 744 749 171.8
D 1 52 2033524 12149.92 707 691 167.3
D 13 168 682974 4077.9 707 691 167.3
D 12 233 41728 245.27 707 691 167.3

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