ASTROSAT CZTI

Data Quality Report

Orbit 20190520_A05_013T01_9000002944_level2

Creation date: 2019-05-24T12:46:07.176154
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_013T01_9000002944cztM0_level2_bc.evt modeM0/AS1A05_013T01_9000002944cztM0_level2_quad_clean.evt
Size (bytes)7,264,428,4802,566,592,640
Size6.8 GB 2.4 GB
Events in quadrant A42,969,94816,327,741
Events in quadrant B46,592,66916,648,882
Events in quadrant C52,058,85815,739,811
Events in quadrant D64,657,68215,216,030

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041060
B041060
C041060
D041060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04198660
B04329850
C04552160
D04891990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03090
B03100
C03110
D03110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20161427661.371929%
B20161435281.749878%
C20161348382.399647%
D20161367853.365358%

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 234119 201607 41 41 0.02% 0.02%
B 234119 201603 86 86 0.04% 0.04%
C 234119 201598 23 23 0.01% 0.01%
D 234119 201601 1411 1411 0.60% 0.70%

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 16 528555 222.53 10727 10543 2327.9
A 10 1 358440 149.45 10727 10543 2327.9
A 0 254 271832 112.24 10727 10543 2327.9
B 7 220 895356 430.41 10890 10618 2055.6
B 4 216 782288 375.4 10890 10618 2055.6
B 3 64 670810 321.17 10890 10618 2055.6
C 3 233 11297180 4682.14 10300 10240 2410.6
C 7 247 823615 337.41 10300 10240 2410.6
C 9 221 140867 54.19 10300 10240 2410.6
D 1 52 16224773 6763.96 10428 10076 2397.2
D 2 16 2012537 835.33 10428 10076 2397.2
D 12 218 1704329 706.76 10428 10076 2397.2

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