ASTROSAT CZTI

Data Quality Report

Orbit 18185

Creation date: 2024-06-27T17:46:26.797086
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/AS1A05_160T02_9000002710_18185cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18185cztM0_level2_quad_clean.evt
Size (bytes)557,936,64090,806,400
Size532.1 MB 86.6 MB
Events in quadrant A3,468,270570,704
Events in quadrant B3,623,441577,058
Events in quadrant C4,389,355551,139
Events in quadrant D4,921,292543,023

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151090
B0154940
C0177980
D0196090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7291650.891510%
B72911151.577287%
C72923344.580362%
D72913384.635852%

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 7506 7292 0 0 0.00% 0.00%
B 7506 7292 3 3 0.04% 0.04%
C 7507 7293 111 111 1.48% 1.52%
D 7506 7292 261 261 3.48% 3.58%

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 4 2 35720 194.5 883 864 179.2
A 15 174 20935 112.0 883 864 179.2
A 15 192 13663 71.42 883 864 179.2
B 7 220 71257 408.56 884 859 172.3
B 0 189 39119 222.05 884 859 172.3
B 0 229 20435 113.61 884 859 172.3
C 4 254 977919 4938.53 838 841 197.8
C 14 238 128650 645.99 838 841 197.8
C 4 238 9245 42.47 838 841 197.8
D 7 238 1360089 6433.91 852 827 211.3
D 10 70 106301 499.25 852 827 211.3
D 13 168 70593 330.23 852 827 211.3

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