ASTROSAT CZTI

Data Quality Report

Orbit 51534

Creation date: 2025-04-08T14:25:53.805493
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_090T01_9000006458_51534cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51534cztM0_level2_quad_clean.evt
Size (bytes)752,500,80072,132,480
Size717.6 MB 68.8 MB
Events in quadrant A7,658,241406,399
Events in quadrant B3,918,380543,266
Events in quadrant C9,378,615372,212
Events in quadrant D6,405,344405,732

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04153214380
B0225536129
C04827416123
D03563811935

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021
B021
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140598351751208140595754434606
B0-1-1
C0-1-1
D0-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6217100316.133183%
B67602834.186391%
C6124126320.623775%
D646684713.099289%

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 9419 6899 541 541 5.74% 7.84%
B 9491 7394 85 85 0.90% 1.15%
C 9416 6863 994 994 10.56% 14.48%
D 9416 7140 589 589 6.26% 8.25%

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 12 3 1939906 12338.92 632 616 157.2
A 7 64 1195477 7602.42 632 616 157.2
A 12 250 603598 3836.53 632 616 157.2
B 10 247 304404 1962.68 718 691 154.7
B 1 207 229964 1481.62 718 691 154.7
B 5 172 111090 713.43 718 691 154.7
C 3 233 4300522 25317.41 611 604 169.8
C 3 242 1950588 11481.28 611 604 169.8
C 13 3 194345 1140.72 611 604 169.8
D 8 176 2938814 16419.03 644 623 179.0
D 7 60 234991 1309.68 644 623 179.0
D 2 249 137608 765.49 644 623 179.0

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