ASTROSAT CZTI

Data Quality Report

Orbit 37739

Creation date: 2024-06-27T21:43:49.009827
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/AS1A11_106T02_9000005344_37739cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37739cztM0_level2_quad_clean.evt
Size (bytes)484,116,48053,343,360
Size461.7 MB 50.9 MB
Events in quadrant A4,127,805314,058
Events in quadrant B2,931,928315,590
Events in quadrant C3,009,390322,456
Events in quadrant D4,246,149304,820

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155573
B0118372
C0117452
D0159532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51084017.850431%
B5108450.880971%
C51081392.721222%
D51083587.008614%

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 7230 5107 385 385 5.33% 7.54%
B 7231 5108 31 31 0.43% 0.61%
C 7231 5108 127 127 1.76% 2.49%
D 7231 5108 358 358 4.95% 7.01%

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 15 222 1422467 11613.58 607 598 122.4
A 10 83 329861 2689.36 607 598 122.4
A 12 189 12052 93.55 607 598 122.4
B 5 255 118530 1026.21 616 600 114.9
B 4 232 92367 798.54 616 600 114.9
B 0 189 62704 540.42 616 600 114.9
C 0 10 326260 2349.12 606 612 138.6
C 15 214 216113 1554.55 606 612 138.6
C 0 207 40920 290.77 606 612 138.6
D 5 222 836503 5736.79 602 587 145.7
D 2 249 444397 3045.81 602 587 145.7
D 13 249 265720 1819.58 602 587 145.7

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