ASTROSAT CZTI

Data Quality Report

Orbit 20190704_A05_205T01_9000003012_level2

Creation date: 2025-12-01T21:15:18.619617
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_205T01_9000003012cztM0_level2.fits modeM0/AS1A05_205T01_9000003012cztM0_level2_quad_clean.evt
Size (bytes)1,222,545,600999,610,560
Size1.1 GB 953.3 MB
Events in quadrant A7,467,7905,678,075
Events in quadrant B7,212,7585,661,496
Events in quadrant C7,419,3245,444,739
Events in quadrant D6,396,3704,959,181

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02050
B02050
C02050
D02050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025320
B025320
C025320
D025320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620430
B02716620
C02575850
D02918620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12445420391.638356%
B12445425762.069841%
C12445520611.656020%
D12445428512.290806%

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 144840 124447 0 0 0.00% 0.00%
B 144840 124442 0 0 0.00% 0.00%
C 144840 124455 0 0 0.00% 0.00%
D 144840 124440 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 7358 11.55 1945 1828 478.6
A 7 110 5891 8.49 1945 1828 478.6
A 0 30 5751 8.2 1945 1828 478.6
B 2 9 5945 10.97 1910 1823 375.9
B 2 8 4883 8.14 1910 1823 375.9
B 14 254 4842 8.03 1910 1823 375.9
C 1 80 5637 7.66 1956 1828 497.5
C 1 81 5547 7.48 1956 1828 497.5
C 12 241 5182 6.74 1956 1828 497.5
D 3 14 4713 6.21 1830 1669 490.4
D 7 3 4538 5.85 1830 1669 490.4
D 6 231 4521 5.81 1830 1669 490.4

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