ASTROSAT CZTI

Data Quality Report

Orbit 20151108_P01_116T01_9000000086_level2

Creation date: 2016-09-06T17:59:21.950694
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/AS1P01_116T01_9000000086cztM0_level2_bc.evt modeM0/AS1P01_116T01_9000000086cztM0_level2_quad_clean.evt
Size (bytes)2,142,155,520814,875,840
Size2.0 GB 777.1 MB
Events in quadrant A13,434,7005,098,520
Events in quadrant B13,859,2765,170,460
Events in quadrant C11,882,3655,127,894
Events in quadrant D21,284,7234,845,219

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02755330
B02765600
C02540650
D02761170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03340
B03350
C03340
D03340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013400
B013300
C013220
D013360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A647004310.666151%
B647334200.648819%
C647871710.263942%
D6458220373.154130%

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 103811 65011 113 113 0.11% 0.17%
B 103811 65049 55 55 0.05% 0.08%
C 103811 65152 109 109 0.10% 0.17%
D 103811 64778 897 897 0.86% 1.38%

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 0 69 1110808 1978.72 2661 2605 560.1
A 0 238 516631 917.81 2661 2605 560.1
A 15 171 409281 726.13 2661 2605 560.1
B 5 191 777906 1602.23 2741 2665 483.9
B 0 220 649446 1336.73 2741 2665 483.9
B 7 221 628396 1293.23 2741 2665 483.9
C 15 241 427216 745.36 2672 2620 569.7
C 9 83 316904 551.71 2672 2620 569.7
C 9 52 254191 441.62 2672 2620 569.7
D 1 4 2496300 4349.01 2590 2523 573.4
D 13 25 2264216 3944.27 2590 2523 573.4
D 12 237 1784906 3108.38 2590 2523 573.4

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