ASTROSAT CZTI

Data Quality Report

Orbit 17994

Creation date: 2024-06-27T17:43:34.870160
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_108T02_9000002676_17994cztM0_level2.evt modeM0/AS1A05_108T02_9000002676_17994cztM0_level2_quad_clean.evt
Size (bytes)516,173,76093,191,040
Size492.3 MB 88.9 MB
Events in quadrant A3,893,606595,742
Events in quadrant B3,590,836607,496
Events in quadrant C3,452,830576,356
Events in quadrant D4,233,409568,454

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159632
B0150042
C0144752
D0172742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67962063.031195%
B67962263.325486%
C67961452.133608%
D67962032.987051%

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 8946 6798 36 36 0.40% 0.53%
B 8946 6798 26 26 0.29% 0.38%
C 8946 6798 1 1 0.01% 0.01%
D 8946 6798 86 86 0.96% 1.27%

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 15 174 498272 2846.95 863 847 174.7
A 14 237 30918 172.11 863 847 174.7
A 14 111 25244 139.63 863 847 174.7
B 5 172 64444 384.19 864 843 165.5
B 0 197 56263 334.77 864 843 165.5
B 7 220 40734 240.97 864 843 165.5
C 14 238 128526 657.37 826 831 194.3
C 3 233 65812 334.52 826 831 194.3
C 9 160 12467 59.9 826 831 194.3
D 5 222 524789 2461.83 829 809 212.8
D 11 176 306131 1434.5 829 809 212.8
D 7 238 179828 841.09 829 809 212.8

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