ASTROSAT CZTI

Data Quality Report

Orbit 20190401_A05_166T04_9000002826_level2

Creation date: 2019-04-03T15:03:37.463918
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_166T04_9000002826cztM0_level2_bc.evt modeM0/AS1A05_166T04_9000002826cztM0_level2_quad_clean.evt
Size (bytes)2,710,578,240742,003,200
Size2.5 GB 707.6 MB
Events in quadrant A12,457,7944,682,691
Events in quadrant B19,182,9054,736,713
Events in quadrant C13,513,1194,616,018
Events in quadrant D32,914,5574,386,585

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012040
B012040
C012040
D012040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01229770
B01502060
C01276160
D02049170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A590659001.523745%
B5906531495.331415%
C5906512872.178955%
D5906457739.774143%

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 68310 59068 4 4 0.01% 0.01%
B 68310 59061 263 263 0.39% 0.45%
C 68310 59066 31 31 0.05% 0.05%
D 68310 59061 244 244 0.36% 0.41%

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 5 98 73240 100.84 3191 3128 695.3
A 13 254 58605 79.79 3191 3128 695.3
A 11 29 48668 65.5 3191 3128 695.3
B 3 112 5733763 9617.29 3170 3093 595.9
B 7 220 674525 1126.81 3170 3093 595.9
B 4 216 124943 204.49 3170 3093 595.9
C 0 207 912679 1248.23 3107 3091 728.7
C 3 233 432569 589.38 3107 3091 728.7
C 8 208 85600 113.23 3107 3091 728.7
D 7 238 14851866 20920.89 3062 2952 709.8
D 1 52 2438913 3432.07 3062 2952 709.8
D 12 218 1952813 2747.19 3062 2952 709.8

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