ASTROSAT CZTI

Data Quality Report

Orbit 23287

Creation date: 2024-06-27T18:52:23.083921
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/AS1C05_012T03_9000003442_23287cztM0_level2.evt modeM0/AS1C05_012T03_9000003442_23287cztM0_level2_quad_clean.evt
Size (bytes)475,680,960129,064,320
Size453.6 MB 123.1 MB
Events in quadrant A3,064,062893,476
Events in quadrant B3,126,650896,996
Events in quadrant C3,229,276847,177
Events in quadrant D4,555,296828,974

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131281
B0132722
C0135471
D0177261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6336460.726010%
B6336490.773359%
C6336821.294192%
D63363024.766414%

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 7481 6336 0 0 0.00% 0.00%
B 7481 6336 6 6 0.08% 0.09%
C 7481 6337 21 21 0.28% 0.33%
D 7481 6336 287 287 3.84% 4.53%

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 10254 59.87 794 780 158.2
A 0 226 6877 38.53 794 780 158.2
A 3 137 6514 36.23 794 780 158.2
B 5 172 72401 497.58 777 760 144.0
B 12 111 17166 113.95 777 760 144.0
B 11 111 15573 102.88 777 760 144.0
C 10 9 159461 915.07 747 750 173.4
C 14 238 120792 692.12 747 750 173.4
C 0 207 15579 85.5 747 750 173.4
D 7 238 1321586 7245.49 760 739 182.3
D 1 52 192454 1051.65 760 739 182.3
D 12 233 49183 265.74 760 739 182.3

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