ASTROSAT CZTI

Data Quality Report

Orbit 20190501_A05_226T09_9000002884_level2

Creation date: 2019-05-03T10:12:37.016223
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/AS1A05_226T09_9000002884cztM0_level2_bc.evt modeM0/AS1A05_226T09_9000002884cztM0_level2_quad_clean.evt
Size (bytes)1,539,198,720412,159,680
Size1.4 GB 393.1 MB
Events in quadrant A7,441,5822,682,601
Events in quadrant B8,012,7332,678,616
Events in quadrant C7,264,6652,538,946
Events in quadrant D21,438,1282,108,709

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0741150
B0767590
C0742400
D01324340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07300
B07300
C07300
D07300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A360001390.386111%
B360003310.919444%
C360002820.783333%
D36000720620.016667%

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 39850 35998 2 2 0.01% 0.01%
B 39850 35998 2 2 0.01% 0.01%
C 39850 35998 0 0 0.00% 0.00%
D 39850 35998 1423 1423 3.57% 3.95%

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 9 143 160860 389.64 1861 1828 408.2
A 13 254 49778 117.48 1861 1828 408.2
A 12 96 42231 98.99 1861 1828 408.2
B 7 220 408999 1145.88 1861 1812 355.4
B 0 198 161366 449.0 1861 1812 355.4
B 0 230 102286 282.75 1861 1812 355.4
C 3 233 382129 925.56 1755 1741 411.0
C 9 221 62315 147.39 1755 1741 411.0
C 0 207 27930 63.72 1755 1741 411.0
D 7 238 8555551 23076.22 1602 1544 370.7
D 1 52 6356051 17142.61 1602 1544 370.7
D 12 218 178615 477.68 1602 1544 370.7

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