ASTROSAT CZTI

Data Quality Report

Orbit 31050

Creation date: 2024-06-27T20:22:45.209206
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_071T63_9000004486_31050cztM0_level2.evt modeM0/AS1A10_071T63_9000004486_31050cztM0_level2_quad_clean.evt
Size (bytes)607,642,56090,999,360
Size579.5 MB 86.8 MB
Events in quadrant A3,176,189616,389
Events in quadrant B5,324,069616,180
Events in quadrant C3,515,588577,334
Events in quadrant D5,971,525516,613

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131312
B0198092
C0141032
D0218892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6139520.847043%
B61392393.893142%
C61391903.094967%
D613968811.207037%

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 7479 6139 0 0 0.00% 0.00%
B 7478 6138 93 93 1.24% 1.52%
C 7478 6139 75 75 1.00% 1.22%
D 7478 6139 689 689 9.21% 11.22%

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 13 254 11588 65.6 822 808 164.3
A 3 137 7834 42.75 822 808 164.3
A 0 226 6922 37.2 822 808 164.3
B 6 159 1746052 11306.61 813 795 154.4
B 5 172 257796 1664.98 813 795 154.4
B 0 190 50616 322.76 813 795 154.4
C 0 10 244416 1337.93 776 785 182.1
C 14 238 126556 690.69 776 785 182.1
C 15 208 40048 215.62 776 785 182.1
D 12 218 880592 5000.15 746 729 176.0
D 8 195 787191 4469.36 746 729 176.0
D 1 52 724139 4111.04 746 729 176.0

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