ASTROSAT CZTI

Data Quality Report

Orbit 20190207_A05_160T02_9000002710_level2

Creation date: 2025-11-27T14:25:15.783116
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/AS1A05_160T02_9000002710cztM0_level2.fits modeM0/AS1A05_160T02_9000002710cztM0_level2_quad_clean.evt
Size (bytes)969,016,320856,831,680
Size924.1 MB 817.1 MB
Events in quadrant A6,031,0405,008,307
Events in quadrant B5,717,0645,013,086
Events in quadrant C5,766,2044,766,450
Events in quadrant D5,063,8164,395,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020220
B020340
C020280
D020220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01460
C01450
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02077240
B02113110
C02302740
D02564030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9876513861.403331%
B9879216951.715726%
C9852838203.877070%
D9847836493.705396%

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 115813 99795 0 0 0.00% 0.00%
B 115813 99770 0 0 0.00% 0.00%
C 115813 99537 0 0 0.00% 0.00%
D 115813 99493 0 0 0.00% 0.00%

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 0 29 5763 11.14 1570 1470 385.3
A 7 110 4991 9.14 1570 1470 385.3
A 0 30 4708 8.4 1570 1470 385.3
B 2 9 4546 10.44 1513 1444 297.1
B 2 8 3876 8.19 1513 1444 297.1
B 3 17 3736 7.72 1513 1444 297.1
C 12 241 3944 6.5 1524 1420 388.5
C 3 126 3890 6.36 1524 1420 388.5
C 9 233 3762 6.03 1524 1420 388.5
D 10 190 3878 6.7 1448 1318 381.9
D 3 14 3689 6.21 1448 1318 381.9
D 7 3 3528 5.79 1448 1318 381.9

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