ASTROSAT CZTI

Data Quality Report

Orbit 20160302_T01_056T01_9000000356_level2

Creation date: 2025-10-28T00:15:05.732977
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/AS1T01_056T01_9000000356cztM0_level2.fits modeM0/AS1T01_056T01_9000000356cztM0_level2_quad_clean.evt
Size (bytes)1,236,090,2401,321,292,160
Size1.2 GB 1.2 GB
Events in quadrant A7,473,2268,052,045
Events in quadrant B7,064,2107,909,179
Events in quadrant C7,248,8607,651,503
Events in quadrant D6,286,1147,046,698

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02848350
B03775310
C03202180
D02940760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027740
B027740
C027740
D027740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13659619901.456851%
B13659658904.311986%
C13659633332.440042%
D13659616611.215995%

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 155170 136584 0 0 0.00% 0.00%
B 155170 136582 0 0 0.00% 0.00%
C 155170 136436 0 0 0.00% 0.00%
D 155170 136577 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 14 188 7134 10.62 1936 1803 502.0
A 0 29 6981 10.31 1936 1803 502.0
A 7 110 6452 9.26 1936 1803 502.0
B 2 9 6123 11.99 1859 1766 363.3
B 12 226 5449 10.14 1859 1766 363.3
B 14 254 5111 9.21 1859 1766 363.3
C 2 191 4940 6.17 1920 1769 514.2
C 1 81 4807 5.91 1920 1769 514.2
C 1 80 4795 5.88 1920 1769 514.2
D 3 14 4752 6.21 1797 1624 504.0
D 11 82 4634 5.97 1797 1624 504.0
D 4 160 4583 5.87 1797 1624 504.0

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