ASTROSAT CZTI

Data Quality Report

Orbit 37237

Creation date: 2024-06-27T21:37:17.756927
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/AS1A10_123T11_9000005286_37237cztM0_level2.evt modeM0/AS1A10_123T11_9000005286_37237cztM0_level2_quad_clean.evt
Size (bytes)506,773,44076,625,280
Size483.3 MB 73.1 MB
Events in quadrant A3,698,245488,733
Events in quadrant B3,899,176479,603
Events in quadrant C3,127,867473,338
Events in quadrant D4,213,850457,727

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149293
B0156582
C0130392
D0166772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60331572.602354%
B60331382.287419%
C6033611.011106%
D60332794.624565%

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 7346 6034 134 134 1.82% 2.22%
B 7346 6034 72 72 0.98% 1.19%
C 7346 6034 47 47 0.64% 0.78%
D 7346 6034 228 228 3.10% 3.78%

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 435647 3131.1 685 672 138.9
A 10 83 311031 2234.07 685 672 138.9
A 9 143 125224 896.57 685 672 138.9
B 0 190 249731 1884.28 682 664 132.2
B 5 172 211424 1594.48 682 664 132.2
B 0 155 156302 1177.46 682 664 132.2
C 15 214 252438 1600.71 668 674 157.3
C 0 10 162085 1026.25 668 674 157.3
C 14 254 62528 393.27 668 674 157.3
D 2 249 955776 5790.53 664 644 164.9
D 2 153 157455 950.67 664 644 164.9
D 13 249 103889 625.93 664 644 164.9

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