ASTROSAT CZTI

Data Quality Report

Orbit 12068

Creation date: 2024-06-27T16:22:04.646236
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/AS1A04_176T01_9000001786_12068cztM0_level2.evt modeM0/AS1A04_176T01_9000001786_12068cztM0_level2_quad_clean.evt
Size (bytes)597,147,84075,375,360
Size569.5 MB 71.9 MB
Events in quadrant A3,660,791471,244
Events in quadrant B6,186,253440,051
Events in quadrant C3,141,439458,382
Events in quadrant D4,639,764442,543

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149993
B0230782
C0138272
D0182252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67451051.556709%
B67456008.895478%
C6745540.800593%
D67452964.388436%

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 7821 6746 13 13 0.17% 0.19%
B 7821 6746 355 355 4.54% 5.26%
C 7821 6746 0 0 0.00% 0.00%
D 7821 6746 215 215 2.75% 3.19%

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 13 251 128836 764.47 839 824 167.5
A 1 162 83088 491.27 839 824 167.5
A 15 239 70025 413.26 839 824 167.5
B 4 239 1407070 9193.12 807 790 153.0
B 4 206 1401285 9155.3 807 790 153.0
B 15 204 103849 673.72 807 790 153.0
C 0 207 7058 33.53 803 806 186.4
C 13 61 5887 27.25 803 806 186.4
C 14 234 3041 11.99 803 806 186.4
D 1 52 1253045 6530.39 793 769 191.8
D 8 195 197024 1023.43 793 769 191.8
D 13 104 58672 301.95 793 769 191.8

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