ASTROSAT CZTI

Data Quality Report

Orbit 20200326_A07_145T01_9000003594_level2

Creation date: 2025-12-10T08:45:47.493464
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/AS1A07_145T01_9000003594cztM0_level2.fits modeM0/AS1A07_145T01_9000003594cztM0_level2_quad_clean.evt
Size (bytes)3,736,791,3603,494,243,520
Size3.5 GB 3.3 GB
Events in quadrant A23,218,10420,747,036
Events in quadrant B22,347,85221,070,756
Events in quadrant C22,557,69820,044,052
Events in quadrant D18,862,95017,805,118

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07925060
B08652580
C010528640
D012576810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06180
B06180
C06180
D06180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077800
B077700
C077780
D077780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A38203143391.135772%
B38204388922.327487%
C382035144613.785255%
D3819524460711.678693%

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 450509 382303 0 0 0.00% 0.00%
B 450509 382307 0 0 0.00% 0.00%
C 450509 382262 0 0 0.00% 0.00%
D 450509 381435 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 22136 11.11 6040 5653 1483.3
A 7 110 18493 8.66 6040 5653 1483.3
A 9 19 17139 7.74 6040 5653 1483.3
B 2 9 18105 10.82 5908 5632 1153.3
B 2 8 15168 8.27 5908 5632 1153.3
B 3 80 14712 7.87 5908 5632 1153.3
C 1 80 17268 7.8 5948 5562 1501.1
C 1 81 17229 7.77 5948 5562 1501.1
C 12 241 15644 6.72 5948 5562 1501.1
D 3 14 13743 6.17 5384 4901 1433.4
D 15 46 13537 6.02 5384 4901 1433.4
D 7 3 13364 5.9 5384 4901 1433.4

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