ASTROSAT CZTI

Data Quality Report

Orbit 20190629_A06_009T02_9000003006_level2

Creation date: 2019-07-01T10:03:19.179535
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/AS1A06_009T02_9000003006cztM0_level2_bc.evt modeM0/AS1A06_009T02_9000003006cztM0_level2_quad_clean.evt
Size (bytes)609,537,600183,539,520
Size581.3 MB 175.0 MB
Events in quadrant A3,740,2451,148,890
Events in quadrant B4,374,1851,155,355
Events in quadrant C3,439,9351,138,905
Events in quadrant D5,859,2191,061,649

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0324310
B0351190
C0320040
D0412490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03120
B03120
C03120
D03120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152681110.727011%
B152684653.045586%
C152681350.884202%
D152687184.702646%

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 19238 15268 15 15 0.08% 0.10%
B 19238 15267 112 112 0.58% 0.73%
C 19238 15268 0 0 0.00% 0.00%
D 19238 15268 138 138 0.72% 0.90%

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 4 2 142328 734.4 895 881 192.6
A 8 205 63065 322.86 895 881 192.6
A 14 238 51763 264.18 895 881 192.6
B 4 142 601157 3573.65 910 893 168.0
B 7 220 168376 997.1 910 893 168.0
B 0 198 31150 180.13 910 893 168.0
C 3 233 38553 184.95 882 883 203.7
C 13 61 5193 21.16 882 883 203.7
C 3 9 4625 18.37 882 883 203.7
D 1 52 2457616 12505.96 868 841 196.4
D 2 234 73946 372.13 868 841 196.4
D 2 120 18950 92.18 868 841 196.4

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