ASTROSAT CZTI

Data Quality Report

Orbit 11556

Creation date: 2024-06-27T16:14:43.608435
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/AS1G08_009T01_9000001692_11556cztM0_level2.evt modeM0/AS1G08_009T01_9000001692_11556cztM0_level2_quad_clean.evt
Size (bytes)157,950,72029,485,440
Size150.6 MB 28.1 MB
Events in quadrant A1,166,212192,582
Events in quadrant B1,414,831192,388
Events in quadrant C768,778199,073
Events in quadrant D1,321,289188,735

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045601
B053431
C034991
D050751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16251468.984615%
B162522713.969231%
C1625291.784615%
D1625754.615385%

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 1811 1627 28 28 1.55% 1.72%
B 1811 1627 55 55 3.04% 3.38%
C 1811 1627 0 0 0.00% 0.00%
D 1811 1627 42 42 2.32% 2.58%

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 8 5 267821 6260.62 196 191 42.7
A 1 162 43007 1001.59 196 191 42.7
A 1 178 25561 593.48 196 191 42.7
B 4 239 346134 8534.39 197 192 40.5
B 15 204 239450 5902.5 197 192 40.5
B 2 209 25170 616.21 197 192 40.5
C 13 61 1504 27.18 197 196 48.1
C 3 202 463 5.55 197 196 48.1
C -1 -1 -1 -1.0 197 196 48.1
D 13 137 368295 7552.55 195 188 48.7
D 1 52 113334 2321.45 195 188 48.7
D 10 199 30647 624.94 195 188 48.7

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