ASTROSAT CZTI

Data Quality Report

Orbit 39890

Creation date: 2024-06-27T22:09:59.542096
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/AS1A12_037T07_9000005504_39890cztM0_level2.fits modeM0/AS1A12_037T07_9000005504_39890cztM0_level2_quad_clean.evt
Size (bytes)411,278,400107,714,880
Size392.2 MB 102.7 MB
Events in quadrant A3,563,234731,098
Events in quadrant B3,791,121723,070
Events in quadrant C3,178,400711,440
Events in quadrant D4,174,104632,100

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01411
B01412
C01411
D01411

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015184396
B016162393
C014033406
D017802587

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6654180.270514%
B66482754.136582%
C664590.135440%
D66132954.460910%

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 9900 6833 4 4 0.04% 0.06%
B 9900 6826 197 197 1.99% 2.89%
C 9900 6828 4 4 0.04% 0.06%
D 9900 6825 228 228 2.30% 3.34%

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 10 83 536656 3490.3 746 730 153.5
A 6 10 66350 427.36 746 730 153.5
A 2 79 33220 211.6 746 730 153.5
B 4 171 572573 4089.88 720 700 139.8
B 0 229 140339 998.66 720 700 139.8
B 5 255 66869 473.22 720 700 139.8
C 15 214 274951 1634.62 722 724 167.8
C 1 16 26349 152.75 722 724 167.8
C 14 254 20288 116.62 722 724 167.8
D 12 227 838308 4779.8 708 687 175.2
D 5 32 171088 972.38 708 687 175.2
D 12 233 109691 622.02 708 687 175.2

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