ASTROSAT CZTI

Data Quality Report

Orbit 31803

Creation date: 2024-06-27T20:32:55.806348
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/AS1T04_041T01_9000004642_31803cztM0_level2.evt modeM0/AS1T04_041T01_9000004642_31803cztM0_level2_quad_clean.evt
Size (bytes)567,504,000115,934,400
Size541.2 MB 110.6 MB
Events in quadrant A3,882,553783,846
Events in quadrant B4,811,990797,471
Events in quadrant C4,031,794762,304
Events in quadrant D4,052,215745,935

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154541
B0185291
C0159741
D0159361

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60422814.650778%
B60421542.548825%
C60412764.568780%
D6041911.506373%

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 7357 6044 148 148 2.01% 2.45%
B 7357 6044 3 3 0.04% 0.05%
C 7356 6043 74 74 1.01% 1.22%
D 7356 6043 26 26 0.35% 0.43%

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 0 13 620135 3816.89 816 804 162.3
A 15 174 103218 631.17 816 804 162.3
A 13 6 11757 67.5 816 804 162.3
B 6 159 1558001 10264.06 811 792 151.7
B 0 229 49459 320.78 811 792 151.7
B 12 111 17580 110.66 811 792 151.7
C 0 10 558655 3031.27 795 804 184.0
C 3 233 170414 921.63 795 804 184.0
C 14 238 133036 718.53 795 804 184.0
D 8 195 733178 3866.15 810 791 189.4
D 12 233 93006 486.79 810 791 189.4
D 2 250 72203 376.97 810 791 189.4

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