ASTROSAT CZTI

Data Quality Report

Orbit 43672

Creation date: 2024-06-27T22:54:21.060575
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/AS1A12_018T01_9000005896_43672cztM0_level2.fits modeM0/AS1A12_018T01_9000005896_43672cztM0_level2_quad_clean.evt
Size (bytes)815,630,40090,889,920
Size777.8 MB 86.7 MB
Events in quadrant A4,853,711677,459
Events in quadrant B3,278,655694,894
Events in quadrant C12,709,910420,918
Events in quadrant D8,868,339521,536

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187041
B0138521
C0420251
D0306181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62251312.104418%
B6226901.445551%
C6225368959.261044%
D6225204632.867470%

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 7120 6226 13 13 0.18% 0.21%
B 7121 6227 22 22 0.31% 0.35%
C 7120 6226 3479 3479 48.86% 55.88%
D 7120 6226 1666 1666 23.40% 26.76%

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 1227524 8530.82 690 677 143.8
A 10 83 827833 5751.59 690 677 143.8
A 15 223 19833 133.2 690 677 143.8
B 4 206 201202 1485.34 691 671 135.0
B 5 235 119269 878.46 691 671 135.0
B 15 35 73339 538.25 691 671 135.0
C 15 142 8710387 83114.63 445 446 104.8
C 15 157 1255703 11978.29 445 446 104.8
C 15 158 810962 7734.35 445 446 104.8
D 12 6 2037260 13314.28 588 568 153.0
D 14 225 1375643 8989.15 588 568 153.0
D 1 52 581735 3799.21 588 568 153.0

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