ASTROSAT CZTI

Data Quality Report

Orbit 20170729_A02_029T01_9000001416_level2

Creation date: 2017-09-24T12:41:12.903926
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/AS1A02_029T01_9000001416cztM0_level2.evt modeM0/AS1A02_029T01_9000001416cztM0_level2_quad_clean.evt
Size (bytes)2,944,491,840440,608,320
Size2.7 GB 420.2 MB
Events in quadrant A20,924,6532,750,330
Events in quadrant B19,316,7022,809,061
Events in quadrant C17,454,5472,756,073
Events in quadrant D28,924,3902,427,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0876360
B0823870
C0779990
D01112870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07720
B07760
C07720
D07700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0910
B0910
C0890
D0910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A378816001.583907%
B379184661.228968%
C379022210.583083%
D3776325276.691735%

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 47769 38539 117 117 0.24% 0.30%
B 47769 38542 29 29 0.06% 0.08%
C 47769 38541 4 4 0.01% 0.01%
D 47769 38461 2321 2321 4.86% 6.03%

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 15 239 3068161 3349.67 4565 4475 914.6
A 14 111 153841 163.31 4565 4475 914.6
A 8 15 99733 104.15 4565 4475 914.6
B 4 81 275130 308.37 4634 4526 877.5
B 0 214 219327 244.78 4634 4526 877.5
B 4 239 211874 236.29 4634 4526 877.5
C 12 4 43015 37.4 4455 4476 1030.6
C 13 61 34030 28.68 4455 4476 1030.6
C 14 67 20376 15.43 4455 4476 1030.6
D 2 16 3954362 3706.04 4239 4138 1065.9
D 8 195 2636124 2469.29 4239 4138 1065.9
D 1 52 2169593 2031.6 4239 4138 1065.9

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