ASTROSAT CZTI

Data Quality Report

Orbit 34469

Creation date: 2022-02-12T02:52:33.129468
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_34469cztM0_level2.evt modeM0/AS1A10_071T13_9000004922_34469cztM0_level2_quad_clean.evt
Size (bytes)525,084,48084,821,760
Size500.8 MB 80.9 MB
Events in quadrant A2,643,967568,672
Events in quadrant B2,861,480577,037
Events in quadrant C2,888,714563,582
Events in quadrant D7,139,446478,167

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113993
B0120602
C0119252
D0250582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5443100.183722%
B5443761.396289%
C5443270.496050%
D544398718.133382%

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 7115 5444 2 2 0.03% 0.04%
B 7115 5444 34 34 0.48% 0.62%
C 7115 5444 22 22 0.31% 0.40%
D 7115 5444 937 937 13.17% 17.21%

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 90687 694.83 645 633 129.6
A 10 83 37015 280.71 645 633 129.6
A 13 6 11211 81.62 645 633 129.6
B 5 172 281723 2278.57 641 624 123.4
B 4 232 18036 141.14 641 624 123.4
B 5 173 15082 117.2 641 624 123.4
C 15 214 229063 1561.44 626 631 146.3
C 15 208 127450 866.87 626 631 146.3
C 0 10 68359 462.95 626 631 146.3
D 7 223 2845572 18464.84 581 567 154.1
D 8 195 896995 5818.06 581 567 154.1
D 10 203 373715 2421.83 581 567 154.1

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