ASTROSAT CZTI

Data Quality Report

Orbit 20190529_T03_118T01_9000002962_level2

Creation date: 2025-12-01T04:47:41.037854
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/AS1T03_118T01_9000002962cztM0_level2.fits modeM0/AS1T03_118T01_9000002962cztM0_level2_quad_clean.evt
Size (bytes)6,205,311,3604,095,504,000
Size5.8 GB 3.8 GB
Events in quadrant A40,696,47924,564,344
Events in quadrant B42,326,55525,440,891
Events in quadrant C40,333,92924,555,720
Events in quadrant D38,391,27423,281,104

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077500
B077380
C077420
D078330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140042297243688140041703653422
B1140042297243688140041703653422
C1140042297243688140041703653422
D1140042297243688140041703653422

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010494770
B08173080
C08443510
D09386090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A382467322278.426086%
B38322060691.583686%
C38325183862.188122%
D382176136293.566158%

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 483194 381311 0 0 0.00% 0.00%
B 483194 383533 0 0 0.00% 0.00%
C 483194 383585 0 0 0.00% 0.00%
D 483194 381442 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 14 235 24090 5.93 10715 10219 2339.1
A 0 29 24007 5.89 10715 10219 2339.1
A -1 -1 -1 -1.0 10715 10219 2339.1
B 5 232 24483 5.85 11309 10869 2325.9
B 2 9 23434 5.4 11309 10869 2325.9
B -1 -1 -1 -1.0 11309 10869 2325.9
C 9 209 25747 6.07 10727 10394 2531.0
C 3 203 24420 5.54 10727 10394 2531.0
C 2 254 23161 5.04 10727 10394 2531.0

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