ASTROSAT CZTI

Data Quality Report

Orbit 22252

Creation date: 2024-06-27T18:38:35.833900
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/AS1A07_018T07_9000003294_22252cztM0_level2.evt modeM0/AS1A07_018T07_9000003294_22252cztM0_level2_quad_clean.evt
Size (bytes)399,277,44045,190,080
Size380.8 MB 43.1 MB
Events in quadrant A2,175,282277,417
Events in quadrant B2,225,170284,285
Events in quadrant C2,279,676269,017
Events in quadrant D5,118,125233,221

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091951
B092551
C094651
D0181301

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A43061453.367394%
B43051844.274100%
C43051774.111498%
D4305115226.759582%

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 4416 4307 0 0 0.00% 0.00%
B 4415 4306 8 8 0.18% 0.19%
C 4415 4306 11 11 0.25% 0.26%
D 4415 4306 838 838 18.98% 19.46%

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 6532 51.13 564 552 116.9
A 3 137 5161 39.41 564 552 116.9
A 0 226 4850 36.75 564 552 116.9
B 4 173 30767 273.64 559 543 110.5
B 12 111 14184 123.5 559 543 110.5
B 11 111 12555 108.75 559 543 110.5
C 10 22 97365 745.44 539 541 129.9
C 14 238 82848 633.67 539 541 129.9
C 13 61 3799 25.08 539 541 129.9
D 1 52 3251903 27097.41 481 465 120.0
D 13 104 25608 209.54 481 465 120.0
D 2 234 17277 140.11 481 465 120.0

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