ASTROSAT CZTI

Data Quality Report

Orbit 34876

Creation date: 2024-06-27T21:06:30.064706
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/AS1C07_005T01_9000004992_34876cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34876cztM0_level2_quad_clean.evt
Size (bytes)513,374,40095,650,560
Size489.6 MB 91.2 MB
Events in quadrant A3,088,523631,223
Events in quadrant B4,846,352609,463
Events in quadrant C3,115,050638,312
Events in quadrant D4,095,762603,500

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130433
B0183052
C0127322
D0159022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5935851.432182%
B59355429.132266%
C5935440.741365%
D59351242.089301%

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 7248 5936 54 54 0.75% 0.91%
B 7248 5936 422 422 5.82% 7.11%
C 7248 5936 32 32 0.44% 0.54%
D 7248 5936 121 121 1.67% 2.04%

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 15 237 304355 2257.36 678 665 134.5
A 10 83 56942 418.31 678 665 134.5
A 15 169 47143 345.48 678 665 134.5
B 5 31 740089 5986.37 650 634 123.5
B 5 200 572495 4629.59 650 634 123.5
B 5 172 462979 3742.99 650 634 123.5
C 15 214 271357 1758.49 662 665 153.9
C 0 207 125739 812.51 662 665 153.9
C 0 10 93932 605.89 662 665 153.9
D 8 195 625162 3861.36 660 641 161.7
D 10 118 200262 1234.24 660 641 161.7
D 2 31 170924 1052.84 660 641 161.7

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