ASTROSAT CZTI

Data Quality Report

Orbit 47680

Creation date: 2024-07-22T20:15:09.906268
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/AS1A13_082T01_9000006342_47680cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47680cztM0_level2_quad_clean.evt
Size (bytes)469,486,080112,406,400
Size447.7 MB 107.2 MB
Events in quadrant A7,090,582737,953
Events in quadrant B3,324,143764,829
Events in quadrant C3,203,166741,447
Events in quadrant D3,232,004684,641

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264661
B0142511
C0143631
D0143041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68142824.138538%
B68151382.024945%
C6814821.203405%
D6814821.203405%

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 7764 6815 4 4 0.05% 0.06%
B 7765 6816 3 3 0.04% 0.04%
C 7764 6815 5 5 0.06% 0.07%
D 7764 6815 7 7 0.09% 0.10%

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 10 83 3933924 23973.77 789 770 164.1
A 9 191 101341 613.01 789 770 164.1
A 3 137 9349 52.29 789 770 164.1
B 0 200 81180 512.43 791 765 156.9
B 0 190 49100 308.01 791 765 156.9
B 0 198 22045 135.6 791 765 156.9
C 14 254 92582 498.12 776 778 184.3
C 3 233 56213 300.78 776 778 184.3
C 12 241 12821 65.34 776 778 184.3
D 8 176 57727 291.01 782 761 195.8
D 2 165 48009 241.36 782 761 195.8
D 11 224 39496 197.87 782 761 195.8

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