ASTROSAT CZTI

Data Quality Report

Orbit 42951

Creation date: 2024-06-27T22:46:11.425404
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/AS1T05_143T01_9000005834_42951cztM0_level2.fits modeM0/AS1T05_143T01_9000005834_42951cztM0_level2_quad_clean.evt
Size (bytes)334,249,92090,953,280
Size318.8 MB 86.7 MB
Events in quadrant A3,439,652619,016
Events in quadrant B2,373,975642,490
Events in quadrant C2,564,657600,644
Events in quadrant D3,598,174535,450

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133911
B0104821
C0106661
D0140941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50881883.694969%
B5089100.196502%
C508970.137552%
D50892765.423462%

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 7061 5089 135 135 1.91% 2.65%
B 7062 5089 7 7 0.10% 0.14%
C 7062 5089 5 5 0.07% 0.10%
D 7062 5089 280 280 3.96% 5.50%

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 560940 4767.33 575 565 117.5
A 10 83 500863 4256.23 575 565 117.5
A 15 222 104893 887.56 575 565 117.5
B 15 32 35046 311.35 580 565 110.7
B 15 85 25292 223.27 580 565 110.7
B 0 229 13626 117.93 580 565 110.7
C 15 214 204848 1556.67 570 574 131.2
C 14 254 77333 584.94 570 574 131.2
C 0 207 44268 332.97 570 574 131.2
D 2 249 501622 3687.36 561 546 135.9
D 1 52 235028 1725.53 561 546 135.9
D 13 249 191344 1404.06 561 546 135.9

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