ASTROSAT CZTI

Data Quality Report

Orbit 19659

Creation date: 2024-06-27T18:05:19.935539
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1T03_005T01_9000002928_19659cztM0_level2.evt modeM0/AS1T03_005T01_9000002928_19659cztM0_level2_quad_clean.evt
Size (bytes)489,764,16081,224,640
Size467.1 MB 77.5 MB
Events in quadrant A3,589,528500,000
Events in quadrant B3,633,972506,809
Events in quadrant C3,587,125480,689
Events in quadrant D3,535,881473,953

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151392
B0151282
C0150252
D0153142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71442012.813550%
B71452463.442967%
C71452213.093072%
D71451612.253324%

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 8989 7144 3 3 0.03% 0.04%
B 8990 7145 3 3 0.03% 0.04%
C 8990 7145 0 0 0.00% 0.00%
D 8990 7145 6 6 0.07% 0.08%

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 13 252 56947 304.59 911 891 184.0
A 11 29 20480 106.44 911 891 184.0
A 9 143 8612 41.95 911 891 184.0
B 7 220 25677 141.84 905 883 174.8
B 0 198 21502 117.95 905 883 174.8
B 12 111 21428 117.53 905 883 174.8
C 14 238 134083 653.69 864 869 203.8
C 3 233 68938 334.02 864 869 203.8
C 9 221 15711 72.83 864 869 203.8
D 1 52 134922 620.9 878 851 215.9
D 1 20 46619 211.96 878 851 215.9
D 2 234 25957 116.27 878 851 215.9

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