ASTROSAT CZTI

Data Quality Report

Orbit 45039

Creation date: 2024-06-27T23:09:16.068510
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/AS1A13_020T01_9000006040_45039cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45039cztM0_level2_quad_clean.evt
Size (bytes)573,995,520110,609,280
Size547.4 MB 105.5 MB
Events in quadrant A5,415,622764,991
Events in quadrant B3,863,687774,375
Events in quadrant C3,405,060762,897
Events in quadrant D8,073,790606,107

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202441
B0153971
C0141431
D0284061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63181482.342513%
B63182513.972776%
C6319951.503402%
D6319115218.230733%

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 7533 6319 10 10 0.13% 0.16%
B 7533 6319 128 128 1.70% 2.03%
C 7534 6320 45 45 0.60% 0.71%
D 7534 6319 957 957 12.70% 15.14%

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 10 83 2374612 14974.13 768 753 158.5
A 13 248 59716 371.93 768 753 158.5
A 0 243 13984 83.46 768 753 158.5
B 0 189 401844 2750.52 753 732 145.8
B 5 255 174739 1193.21 753 732 145.8
B 5 32 145986 996.04 753 732 145.8
C 14 254 278624 1577.17 757 763 176.2
C 12 2 73954 415.44 757 763 176.2
C 1 3 49167 274.75 757 763 176.2
D 13 174 2221559 12501.99 713 694 177.6
D 5 235 990507 5571.98 713 694 177.6
D 13 249 477194 2682.37 713 694 177.6

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