ASTROSAT CZTI

Data Quality Report

Orbit 20170214_G06_087T04_9000001028_level2

Creation date: 2025-11-09T15:02:24.654115
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/AS1G06_087T04_9000001028cztM0_level2.fits modeM0/AS1G06_087T04_9000001028cztM0_level2_quad_clean.evt
Size (bytes)19,549,4406,413,760
Size18.6 MB 6.1 MB
Events in quadrant A122,86618,253
Events in quadrant B119,20018,546
Events in quadrant C123,31017,592
Events in quadrant D104,29416,030

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037630
B039270
C036370
D049400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1667130.779844%
B166780.479904%
C166770.419916%
D1667895.338932%

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 1666 1666 0 0 0.00% 0.00%
B 1666 1666 0 0 0.00% 0.00%
C 1666 1666 0 0 0.00% 0.00%
D 1665 1665 0 0 0.00% 0.00%

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 14 204 124 9.83 32 30 9.6
A 14 188 121 9.51 32 30 9.6
A 0 29 113 8.68 32 30 9.6
B 5 225 99 8.33 31 30 8.3
B 2 9 87 6.88 31 30 8.3
B 5 128 80 6.04 31 30 8.3
C 9 233 96 6.49 32 31 10.0
C 12 241 85 5.39 32 31 10.0
C 9 236 82 5.09 32 31 10.0
D 10 189 94 7.49 29 27 8.9
D 4 160 80 5.93 29 27 8.9
D 15 78 77 5.59 29 27 8.9

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