ASTROSAT CZTI

Data Quality Report

Orbit 27007

Creation date: 2024-06-27T19:35:30.021908
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/AS1A09_145T01_9000003900_27007cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_27007cztM0_level2_quad_clean.evt
Size (bytes)680,042,88079,920,000
Size648.5 MB 76.2 MB
Events in quadrant A8,098,808437,758
Events in quadrant B3,414,152539,506
Events in quadrant C3,266,132519,379
Events in quadrant D5,399,131492,847

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284390
B0140050
C0134990
D0200320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6157184429.949651%
B61571131.835309%
C6157981.591684%
D6156110417.933723%

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 7292 6157 1441 1441 19.76% 23.40%
B 7292 6157 51 51 0.70% 0.83%
C 7292 6157 0 0 0.00% 0.00%
D 7290 6155 1027 1027 14.09% 16.69%

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 6 16 3329171 22708.01 728 715 146.6
A 14 235 1946342 13273.82 728 715 146.6
A 8 192 14438 93.62 728 715 146.6
B 0 189 195807 1245.05 819 802 156.6
B 12 111 17988 109.73 819 802 156.6
B 11 111 16328 99.13 819 802 156.6
C 14 238 131037 699.96 800 810 186.0
C 3 233 10144 50.17 800 810 186.0
C 15 208 5794 26.79 800 810 186.0
D 12 233 2227282 13109.18 707 690 169.8
D 1 239 283078 1662.57 707 690 169.8
D 11 176 133673 782.94 707 690 169.8

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