ASTROSAT CZTI

Data Quality Report

Orbit 04907

Creation date: 2024-06-27T14:48:41.301281
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/AS1G05_237T01_9000000620_04907cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04907cztM0_level2_quad_clean.evt
Size (bytes)813,628,80053,663,040
Size775.9 MB 51.2 MB
Events in quadrant A3,414,184354,776
Events in quadrant B3,375,934356,859
Events in quadrant C3,095,714350,195
Events in quadrant D14,321,633115,301

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139942
B0137611
C0131771
D0468211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63981392.172554%
B63981091.703657%
C6398731.140982%
D6398579690.590810%

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 7638 6398 19 19 0.25% 0.30%
B 7638 6398 5 5 0.07% 0.08%
C 7638 6398 0 0 0.00% 0.00%
D 7638 6398 5299 5299 69.38% 82.82%

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 8 15 131761 789.69 819 802 165.8
A 0 31 93765 560.57 819 802 165.8
A 0 50 20318 117.68 819 802 165.8
B 15 54 59494 375.87 821 805 156.1
B 15 204 53761 339.15 821 805 156.1
B 4 239 36081 225.92 821 805 156.1
C 13 61 6579 31.63 790 796 182.8
C 1 16 6439 30.87 790 796 182.8
C 8 222 3165 12.96 790 796 182.8
D 2 63 11729400 123315.44 384 373 95.1
D 2 33 452135 4749.69 384 373 95.1
D 2 234 191828 2012.9 384 373 95.1

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