ASTROSAT CZTI

Data Quality Report

Orbit 20170301_A02_158T01_9000001064_level2

Creation date: 2017-09-23T07:31:13.427442
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_158T01_9000001064cztM0_level2.evt modeM0/AS1A02_158T01_9000001064cztM0_level2_quad_clean.evt
Size (bytes)3,383,896,320581,440,320
Size3.2 GB 554.5 MB
Events in quadrant A23,157,8703,616,619
Events in quadrant B23,579,6663,688,006
Events in quadrant C23,422,8663,636,458
Events in quadrant D29,090,6783,384,573

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09720
B09720
C09720
D09720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950
B0950
C0950
D0950

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01004360
B01009420
C01012520
D01186600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A478766721.403626%
B478766581.374384%
C478765811.213552%
D4787624995.219734%

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 57271 47883 104 104 0.18% 0.22%
B 57271 47881 64 64 0.11% 0.13%
C 57271 47883 105 105 0.18% 0.22%
D 57271 47882 1896 1896 3.31% 3.96%

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 15 234 431482 365.45 5806 5687 1165.1
A 0 23 244258 204.76 5806 5687 1165.1
A 0 226 71604 56.58 5806 5687 1165.1
B 4 239 238673 212.51 5840 5700 1096.3
B 0 214 172408 152.07 5840 5700 1096.3
B 4 81 137600 120.32 5840 5700 1096.3
C 9 68 1117935 847.38 5690 5725 1312.5
C 8 229 48648 32.7 5690 5725 1312.5
C 13 61 44098 29.24 5690 5725 1312.5
D 1 239 2988110 2185.39 5598 5434 1364.8
D 12 221 2632536 1924.86 5598 5434 1364.8
D 13 105 628525 456.53 5598 5434 1364.8

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