ASTROSAT CZTI

Data Quality Report

Orbit 20170510_G07_013T02_9000001216_level2

Creation date: 2025-11-13T13:06:04.810447
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/AS1G07_013T02_9000001216cztM0_level2.fits modeM0/AS1G07_013T02_9000001216cztM0_level2_quad_clean.evt
Size (bytes)554,837,760593,766,720
Size529.1 MB 566.3 MB
Events in quadrant A3,316,3023,594,110
Events in quadrant B3,206,4863,602,485
Events in quadrant C3,309,7723,480,444
Events in quadrant D2,853,5543,188,982

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012240
B012240
C012240
D012240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01273730
B01295510
C01261000
D01355830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A600206941.156281%
B6001811371.894432%
C600186081.013029%
D6001710941.822817%

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 69230 60013 0 0 0.00% 0.00%
B 69230 60011 0 0 0.00% 0.00%
C 69230 60012 0 0 0.00% 0.00%
D 69230 60014 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 3336 11.63 863 807 217.5
A 7 110 2751 8.94 863 807 217.5
A 0 30 2601 8.25 863 807 217.5
B 2 9 2680 11.36 847 810 164.6
B 12 226 2198 8.43 847 810 164.6
B 14 254 2160 8.2 847 810 164.6
C 1 80 2495 7.36 874 814 228.4
C 1 81 2428 7.07 874 814 228.4
C 12 241 2414 7.01 874 814 228.4
D 6 231 2099 6.21 813 740 219.0
D 10 189 2071 6.08 813 740 219.0
D 3 14 2055 6.01 813 740 219.0

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