ASTROSAT CZTI

Data Quality Report

Orbit 01338

Creation date: 2024-06-27T14:11:11.345821
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/AS1G04_002T02_9000000230_01338cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01338cztM0_level2_quad_clean.evt
Size (bytes)1,131,681,60099,645,120
Size1.1 GB 95.0 MB
Events in quadrant A8,722,261643,738
Events in quadrant B8,991,570649,946
Events in quadrant C8,461,947629,832
Events in quadrant D7,649,673622,701

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307172
B0315461
C0299321
D0275241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67611692.499630%
B6761881.301583%
C6761620.917024%
D6761731.079722%

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 7131 6761 514 514 7.21% 7.60%
B 7131 6761 415 415 5.82% 6.14%
C 7131 6761 308 308 4.32% 4.56%
D 7131 6761 224 224 3.14% 3.31%

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 32 672659 1325.47 2092 2112 505.9
A 14 5 9091 13.8 2092 2112 505.9
A 0 214 7640 10.93 2092 2112 505.9
B 8 4 211697 405.34 2174 2185 516.9
B 5 191 144058 274.48 2174 2185 516.9
B 15 22 127107 241.68 2174 2185 516.9
C 3 9 332742 601.95 1970 2040 549.4
C 15 241 328075 593.46 1970 2040 549.4
C 3 79 35995 61.8 1970 2040 549.4
D 10 84 200639 335.98 1946 2016 591.2
D 13 252 56850 92.75 1946 2016 591.2
D 9 66 24888 38.69 1946 2016 591.2

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