ASTROSAT CZTI

Data Quality Report

Orbit 20200304_A07_001T02_9000003546_level2

Creation date: 2020-03-06T15:34:19.409304
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/AS1A07_001T02_9000003546cztM0_level2_bc.evt modeM0/AS1A07_001T02_9000003546cztM0_level2_quad_clean.evt
Size (bytes)917,524,800384,949,440
Size875.0 MB 367.1 MB
Events in quadrant A4,232,7712,718,025
Events in quadrant B4,471,9522,746,646
Events in quadrant C4,443,5152,632,001
Events in quadrant D13,194,1732,109,715

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0429060
B0434820
C0441630
D0896210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04320
B04320
C04320
D04320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A210771660.787588%
B210722391.134207%
C210783751.779106%
D21073609528.923267%

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 23939 21079 0 0 0.00% 0.00%
B 23939 21078 1 1 0.00% 0.00%
C 23939 21078 5 5 0.02% 0.02%
D 23939 20955 441 441 1.84% 2.10%

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 13 254 32212 130.77 1091 1072 238.1
A 6 16 9011 33.34 1091 1072 238.1
A 0 226 6933 24.61 1091 1072 238.1
B 0 197 100238 473.83 1097 1073 209.3
B 6 36 32782 151.51 1097 1073 209.3
B 0 190 22423 102.01 1097 1073 209.3
C 0 239 215521 858.05 1048 1042 250.0
C 0 10 124117 492.38 1048 1042 250.0
C 7 247 38863 151.31 1048 1042 250.0
D 12 218 8137809 38460.46 891 859 211.6
D 2 82 519548 2451.66 891 859 211.6
D 8 195 432655 2040.95 891 859 211.6

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