ASTROSAT CZTI

Data Quality Report

Orbit 11440

Creation date: 2024-06-27T16:12:48.410019
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/AS1A04_021T02_9000001676_11440cztM0_level2.evt modeM0/AS1A04_021T02_9000001676_11440cztM0_level2_quad_clean.evt
Size (bytes)649,797,120121,060,800
Size619.7 MB 115.5 MB
Events in quadrant A4,238,600757,230
Events in quadrant B5,810,532734,813
Events in quadrant C4,050,694817,643
Events in quadrant D4,988,963751,987

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183524
B0232613
C0180273
D0209593

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8703530.608985%
B87035085.837068%
C8703370.425141%
D87032272.608296%

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 9068 8707 1 1 0.01% 0.01%
B 9068 8707 228 228 2.51% 2.62%
C 9068 8707 0 0 0.00% 0.00%
D 9068 8707 137 137 1.51% 1.57%

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 1 162 89094 420.34 1028 1002 209.6
A 1 178 54761 256.52 1028 1002 209.6
A 1 161 45787 213.7 1028 1002 209.6
B 4 239 1082840 5572.89 1012 985 194.1
B 3 64 265827 1364.26 1012 985 194.1
B 15 204 126646 647.31 1012 985 194.1
C 8 128 10479 39.27 1031 1038 240.4
C 13 61 7568 27.16 1031 1038 240.4
C 12 4 7532 27.01 1031 1038 240.4
D 1 52 323712 1327.67 1009 982 243.1
D 13 152 249267 1021.41 1009 982 243.1
D 9 85 141322 577.34 1009 982 243.1

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