ASTROSAT CZTI

Data Quality Report

Orbit 20171117_A04_112T01_9000001698_level2

Creation date: 2018-01-09T05:20:59.646259
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A04_112T01_9000001698cztM0_level2_bc.evt modeM0/AS1A04_112T01_9000001698cztM0_level2_quad_clean.evt
Size (bytes)2,149,436,160629,285,760
Size2.0 GB 600.1 MB
Events in quadrant A22,851,3833,890,125
Events in quadrant B17,367,8124,031,396
Events in quadrant C8,813,3214,050,430
Events in quadrant D12,896,2103,897,531

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01526150
B01314920
C0947920
D01091090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09440
B09440
C09440
D09440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46475516111.104895%
B4647540268.662722%
C464754120.886498%
D4647511952.571275%

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 52721 46472 533 533 1.01% 1.15%
B 52721 46476 69 69 0.13% 0.15%
C 52721 46478 0 0 0.00% 0.00%
D 52721 46476 111 111 0.21% 0.24%

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 8 5 13415411 28322.12 2165 2126 473.6
A 1 162 439607 923.74 2165 2126 473.6
A 15 174 244273 511.29 2165 2126 473.6
B 4 239 5755545 13461.02 2231 2172 427.4
B 3 64 951163 2220.33 2231 2172 427.4
B 15 204 746108 1740.57 2231 2172 427.4
C 0 10 33877 64.17 2234 2202 493.6
C 13 61 13618 23.13 2234 2202 493.6
C 8 128 12866 21.6 2234 2202 493.6
D 2 120 819663 1570.4 2243 2163 520.6
D 10 253 717123 1373.43 2243 2163 520.6
D 13 137 683879 1309.57 2243 2163 520.6

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