ASTROSAT CZTI

Data Quality Report

Orbit 55234

Creation date: 2025-12-14T12:12:52.449997
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/AS1A14_009T01_9000006534_55234cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55234cztM0_level2_quad_clean.evt
Size (bytes)513,374,400118,437,120
Size489.6 MB 113.0 MB
Events in quadrant A3,944,857764,053
Events in quadrant B3,884,767824,880
Events in quadrant C5,099,521732,566
Events in quadrant D5,421,426681,208

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181380
B0179830
C0210310
D0220310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8400871.035714%
B84011411.678372%
C84012673.178193%
D84013434.082847%

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 8400 8400 70 70 0.83% 0.83%
B 8401 8401 70 70 0.83% 0.83%
C 8401 8401 257 257 3.06% 3.06%
D 8401 8401 352 352 4.19% 4.19%

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 8 190000 859.96 887 861 219.9
A 11 191 131743 595.08 887 861 219.9
A 4 205 78612 353.51 887 861 219.9
B 2 249 178604 935.38 879 844 190.0
B 10 247 131724 688.69 879 844 190.0
B 12 111 24007 121.88 879 844 190.0
C 10 22 408222 1702.27 863 851 239.3
C 13 3 370247 1543.59 863 851 239.3
C 12 252 261452 1088.97 863 851 239.3
D 11 129 952248 4024.38 851 816 236.4
D 8 160 580525 2452.06 851 816 236.4
D 2 249 172268 725.21 851 816 236.4

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