ASTROSAT CZTI

Data Quality Report

Orbit 37084

Creation date: 2024-06-27T21:35:21.340735
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/AS1A09_138T04_9000005282_37084cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37084cztM0_level2_quad_clean.evt
Size (bytes)532,549,44067,622,400
Size507.9 MB 64.5 MB
Events in quadrant A2,941,493442,611
Events in quadrant B5,110,250399,154
Events in quadrant C2,887,420429,509
Events in quadrant D4,822,031397,319

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118693
B0185552
C0116222
D0179812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5409180.332779%
B5409154728.600481%
C5409180.332779%
D54094879.003513%

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 7262 5410 5 5 0.07% 0.09%
B 7262 5410 490 490 6.75% 9.06%
C 7262 5410 14 14 0.19% 0.26%
D 7262 5410 467 467 6.43% 8.63%

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 261062 1936.7 670 658 134.5
A 7 3 65842 484.79 670 658 134.5
A 9 143 16562 118.28 670 658 134.5
B 5 184 3037742 31104.33 507 494 97.6
B 5 255 21095 210.97 507 494 97.6
B 4 81 13032 128.4 507 494 97.6
C 15 214 234245 1571.18 637 641 148.7
C 0 10 97822 653.62 637 641 148.7
C 10 20 43130 285.77 637 641 148.7
D 12 17 740162 4784.62 630 614 154.6
D 1 47 524899 3391.94 630 614 154.6
D 13 249 179607 1158.02 630 614 154.6

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