ASTROSAT CZTI

Data Quality Report

Orbit 36791

Creation date: 2024-06-27T21:31:43.802576
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/AS1A11_075T01_9000005244_36791cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36791cztM0_level2_quad_clean.evt
Size (bytes)411,373,44031,337,280
Size392.3 MB 29.9 MB
Events in quadrant A1,483,710236,987
Events in quadrant B7,405,42134,470
Events in quadrant C1,602,389238,126
Events in quadrant D1,767,062228,933

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062952
B0239801
C065171
D073341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2924110.376197%
B2924269492.134063%
C2924391.333789%
D2924983.351573%

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 4476 2925 5 5 0.11% 0.17%
B 4475 2923 2629 2629 58.75% 89.94%
C 4476 2925 35 35 0.78% 1.20%
D 4476 2925 75 75 1.68% 2.56%

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 121269 1723.86 341 334 70.2
A 9 143 34713 490.05 341 334 70.2
A 13 6 4883 64.84 341 334 70.2
B 12 1 6758060 262299.88 125 122 25.8
B 4 232 72163 2796.17 125 122 25.8
B 0 190 32610 1260.98 125 122 25.8
C 15 214 133117 1708.59 329 331 77.7
C 0 207 81032 1038.4 329 331 77.7
C 14 254 47799 610.78 329 331 77.7
D 13 249 210017 2589.72 326 316 81.0
D 5 222 111075 1367.83 326 316 81.0
D 2 250 61054 750.09 326 316 81.0

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