ASTROSAT CZTI

Data Quality Report

Orbit 12579

Creation date: 2024-06-27T16:29:29.648359
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_130T04_9000001872_12579cztM0_level2.evt modeM0/AS1A04_130T04_9000001872_12579cztM0_level2_quad_clean.evt
Size (bytes)266,898,24043,804,800
Size254.5 MB 41.8 MB
Events in quadrant A1,850,376263,500
Events in quadrant B2,125,506271,822
Events in quadrant C1,910,305269,088
Events in quadrant D1,936,847252,885

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079792
B087731
C082201
D083661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3802431.130984%
B38021203.156234%
C3802431.130984%
D3802531.394003%

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 5082 3804 0 0 0.00% 0.00%
B 5082 3803 33 33 0.65% 0.87%
C 5082 3804 7 7 0.14% 0.18%
D 5082 3804 26 26 0.51% 0.68%

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 12 189 7052 67.34 479 470 97.7
A 0 226 4256 38.74 479 470 97.7
A 12 194 3668 32.72 479 470 97.7
B 4 239 106524 1132.36 481 469 93.7
B 3 64 92422 981.79 481 469 93.7
B 11 51 23196 242.66 481 469 93.7
C 15 208 87912 801.67 466 468 109.1
C 13 61 3455 27.38 466 468 109.1
C 1 5 1987 13.93 466 468 109.1
D 1 52 65624 574.6 463 448 113.4
D 10 157 60570 530.04 463 448 113.4
D 13 249 37175 323.79 463 448 113.4

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