ASTROSAT CZTI

Data Quality Report

Orbit 37579

Creation date: 2024-06-27T21:41:47.337251
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/AS1T05_053T01_9000005338_37579cztM0_level2.evt modeM0/AS1T05_053T01_9000005338_37579cztM0_level2_quad_clean.evt
Size (bytes)395,743,68062,680,320
Size377.4 MB 59.8 MB
Events in quadrant A3,121,391390,031
Events in quadrant B2,836,208401,488
Events in quadrant C2,600,321395,690
Events in quadrant D3,090,242362,966

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123563
B0114442
C0106072
D0124722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4953400.807591%
B4953601.211387%
C4953270.545124%
D49531432.887139%

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 7076 4954 40 40 0.57% 0.81%
B 7076 4954 46 46 0.65% 0.93%
C 7076 4954 37 37 0.52% 0.75%
D 7076 4954 148 148 2.09% 2.99%

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 15 222 449248 3850.75 582 572 116.5
A 10 83 294959 2526.57 582 572 116.5
A 9 143 52902 449.12 582 572 116.5
B 4 171 131103 1183.24 585 570 110.3
B 5 172 79178 712.56 585 570 110.3
B 0 230 70711 635.81 585 570 110.3
C 15 214 212724 1610.32 566 570 131.7
C 0 10 164659 1245.49 566 570 131.7
C 14 254 9667 69.05 566 570 131.7
D 2 153 329596 2444.09 552 537 134.6
D 1 47 158529 1173.49 552 537 134.6
D 13 249 123835 915.8 552 537 134.6

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