ASTROSAT CZTI

Data Quality Report

Orbit 18984

Creation date: 2024-06-27T17:57:33.526698
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/AS1A05_132T01_9000002828_18984cztM0_level2.evt modeM0/AS1A05_132T01_9000002828_18984cztM0_level2_quad_clean.evt
Size (bytes)356,186,88056,675,520
Size339.7 MB 54.0 MB
Events in quadrant A2,012,636361,249
Events in quadrant B2,571,646362,937
Events in quadrant C2,161,358352,383
Events in quadrant D3,751,229339,285

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086701
B0104061
C088821
D0142141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4260250.586854%
B42601804.225352%
C4260501.173709%
D42603357.863850%

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 5020 4261 0 0 0.00% 0.00%
B 5020 4261 102 102 2.03% 2.39%
C 5020 4261 5 5 0.10% 0.12%
D 5020 4261 239 239 4.76% 5.61%

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 5539 47.36 521 509 106.2
A 0 226 4651 39.0 521 509 106.2
A 3 137 4182 34.58 521 509 106.2
B 3 112 505839 5046.76 512 499 100.1
B 7 220 23272 227.43 512 499 100.1
B 12 111 11810 112.96 512 499 100.1
C 14 238 77436 646.47 502 505 119.0
C 3 233 76375 637.56 502 505 119.0
C 0 207 38640 320.46 502 505 119.0
D 7 238 1752290 14346.77 496 481 122.1
D 1 52 41262 333.98 496 481 122.1
D 12 110 30397 245.0 496 481 122.1

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