ASTROSAT CZTI

Data Quality Report

Orbit 36266

Creation date: 2022-06-13T15:50:51.948695
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_071T36_9000005182_36266cztM0_level2.evt modeM0/AS1A10_071T36_9000005182_36266cztM0_level2_quad_clean.evt
Size (bytes)535,124,16077,489,280
Size510.3 MB 73.9 MB
Events in quadrant A3,195,909488,171
Events in quadrant B5,069,552458,268
Events in quadrant C3,444,482483,774
Events in quadrant D4,052,029458,994

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135163
B0193752
C0140382
D0163272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6556210.320317%
B65565748.755339%
C6556620.945699%
D6556731.113484%

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 9332 6558 6 6 0.06% 0.09%
B 9332 6558 458 458 4.91% 6.98%
C 9332 6558 47 47 0.50% 0.72%
D 9332 6558 56 56 0.60% 0.85%

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 10 83 195080 1250.71 762 745 155.4
A 9 143 48342 306.33 762 745 155.4
A 13 254 8527 50.08 762 745 155.4
B 5 172 1223412 8650.37 730 710 141.3
B 5 236 630086 4452.71 730 710 141.3
B 4 171 127639 898.0 730 710 141.3
C 15 214 272215 1553.01 740 747 174.8
C 0 10 264331 1507.9 740 747 174.8
C 0 207 26148 145.31 740 747 174.8
D 12 6 548206 2990.12 738 717 183.1
D 13 249 161992 880.81 738 717 183.1
D 13 171 119969 651.3 738 717 183.1

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