ASTROSAT CZTI

Data Quality Report

Orbit 20190308_A05_082T10_9000002774_level2

Creation date: 2025-11-28T15:36:57.148370
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_082T10_9000002774cztM0_level2.fits modeM0/AS1A05_082T10_9000002774cztM0_level2_quad_clean.evt
Size (bytes)154,428,48089,688,960
Size147.3 MB 85.5 MB
Events in quadrant A951,458443,561
Events in quadrant B942,080460,417
Events in quadrant C977,800447,195
Events in quadrant D851,194408,379

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0329420
B0306540
C0314370
D0333730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138322882.082128%
B138322331.684500%
C138323682.660497%
D138322431.756796%

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 17857 13832 0 0 0.00% 0.00%
B 17857 13831 0 0 0.00% 0.00%
C 17857 13830 0 0 0.00% 0.00%
D 17857 13832 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 7 110 802 9.1 248 234 62.4
A 0 29 770 8.59 248 234 62.4
A 9 19 712 7.66 248 234 62.4
B 2 9 714 9.29 249 240 51.0
B 2 8 641 7.86 249 240 51.0
B 5 128 640 7.84 249 240 51.0
C 1 81 739 7.34 257 244 67.4
C 1 80 698 6.73 257 244 67.4
C 3 126 672 6.35 257 244 67.4
D 10 190 659 6.76 242 224 64.4
D 10 189 648 6.58 242 224 64.4
D 1 19 605 5.92 242 224 64.4

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