ASTROSAT CZTI

Data Quality Report

Orbit 38757

Creation date: 2024-06-27T21:56:03.493658
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/AS1A12_054T01_9000005392_38757cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38757cztM0_level2_quad_clean.evt
Size (bytes)261,956,16065,171,520
Size249.8 MB 62.2 MB
Events in quadrant A2,090,363438,386
Events in quadrant B1,809,778446,521
Events in quadrant C1,916,762421,631
Events in quadrant D3,569,431386,024

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085671
B080961
C080941
D0133441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3976270.679074%
B397630.075453%
C397620.050302%
D39761182.967807%

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 3976 3976 22 22 0.55% 0.55%
B 3976 3976 0 0 0.00% 0.00%
C 3976 3976 3 3 0.08% 0.08%
D 3976 3976 108 108 2.72% 2.72%

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 262382 2904.37 440 432 90.2
A 13 248 87199 962.03 440 432 90.2
A 9 143 27604 301.27 440 432 90.2
B 4 171 34178 389.24 438 426 86.7
B 15 85 13744 153.59 438 426 86.7
B 12 111 10699 118.47 438 426 86.7
C 15 214 174664 1720.33 430 432 101.3
C 14 254 38433 375.21 430 432 101.3
C 0 10 12945 123.55 430 432 101.3
D 2 16 1270509 12072.85 427 415 105.2
D 5 222 329420 3127.35 427 415 105.2
D 10 118 152854 1449.01 427 415 105.2

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