ASTROSAT CZTI

Data Quality Report

Orbit 34477

Creation date: 2022-02-12T15:09:06.304223
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_071T13_9000004922_34477cztM0_level2.evt modeM0/AS1A10_071T13_9000004922_34477cztM0_level2_quad_clean.evt
Size (bytes)516,395,52054,547,200
Size492.5 MB 52.0 MB
Events in quadrant A3,306,511321,657
Events in quadrant B3,885,475325,404
Events in quadrant C3,460,385318,517
Events in quadrant D4,614,979301,511

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133403
B0149862
C0135882
D0175312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5497240.436602%
B54972714.929962%
C54971011.837366%
D54972284.147717%

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 7260 5498 10 10 0.14% 0.18%
B 7259 5497 188 188 2.59% 3.42%
C 7260 5498 80 80 1.10% 1.46%
D 7260 5498 197 197 2.71% 3.58%

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 15 169 596865 4357.05 684 671 136.8
A 10 83 37573 269.68 684 671 136.8
A 10 255 11220 77.09 684 671 136.8
B 5 172 727290 5694.86 662 645 127.6
B 5 31 289006 2259.94 662 645 127.6
B 0 189 152606 1190.95 662 645 127.6
C 15 208 306321 2007.09 655 660 152.3
C 15 214 233390 1528.19 655 660 152.3
C 4 254 171987 1125.0 655 660 152.3
D 12 79 830804 5102.26 659 640 162.7
D 8 195 814901 5004.52 659 640 162.7
D 2 250 129715 793.31 659 640 162.7

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