ASTROSAT CZTI

Data Quality Report

Orbit 19902

Creation date: 2024-06-27T18:08:32.636342
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/AS1A05_064T01_9000002964_19902cztM0_level2.evt modeM0/AS1A05_064T01_9000002964_19902cztM0_level2_quad_clean.evt
Size (bytes)685,693,440113,512,320
Size653.9 MB 108.3 MB
Events in quadrant A2,987,543789,771
Events in quadrant B3,251,876812,131
Events in quadrant C3,687,810790,655
Events in quadrant D10,433,636625,318

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127471
B0136321
C0149241
D0352121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5993200.333723%
B5994210.350350%
C59941352.252252%
D5994213335.585586%

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 7338 5994 3 3 0.04% 0.05%
B 7339 5995 2 2 0.03% 0.03%
C 7339 5995 14 14 0.19% 0.23%
D 7338 5993 2201 2201 29.99% 36.73%

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 4 2 30578 195.77 762 749 152.4
A 9 143 16575 103.87 762 749 152.4
A 0 226 6568 38.19 762 749 152.4
B 4 216 113860 806.97 769 751 140.2
B 0 190 39135 273.85 769 751 140.2
B 0 197 31409 218.73 769 751 140.2
C 9 221 613111 3502.47 754 759 174.8
C 14 238 119360 678.36 754 759 174.8
C 7 220 11851 63.44 754 759 174.8
D 2 184 5566299 34507.69 668 651 161.3
D 1 52 622973 3858.47 668 651 161.3
D 9 1 611720 3788.7 668 651 161.3

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