ASTROSAT CZTI

Data Quality Report

Orbit 20230809_A07_041T01_9000005808_level2

Creation date: 2023-08-15T12:16:13.818272
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/AS1A07_041T01_9000005808cztM0_level2.fits modeM0/AS1A07_041T01_9000005808cztM0_level2_quad_clean.evt
Size (bytes)443,505,600515,433,600
Size423.0 MB 491.6 MB
Events in quadrant A2,621,6883,154,682
Events in quadrant B2,518,7743,146,749
Events in quadrant C2,558,1163,006,924
Events in quadrant D2,250,2862,820,095

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01076470
B01042420
C01220090
D01105920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010360
B010360
C010360
D010360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01830
B01830
C01830
D01830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50750850.167488%
B507511580.311324%
C5075113532.665957%
D507516161.213769%

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 69028 50750 0 0 0.00% 0.00%
B 69029 50751 0 0 0.00% 0.00%
C 69029 50747 0 0 0.00% 0.00%
D 69029 50746 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 2229 9.25 683 641 171.7
A 0 29 2160 8.85 683 641 171.7
A 9 19 2076 8.36 683 641 171.7
B 2 9 2129 11.38 665 631 131.7
B 3 80 1834 9.14 665 631 131.7
B 3 17 1778 8.71 665 631 131.7
C 1 81 2151 8.67 675 631 175.4
C 3 203 2027 7.96 675 631 175.4
C 3 202 1999 7.8 675 631 175.4
D 4 160 1735 6.64 643 585 173.3
D 3 14 1690 6.38 643 585 173.3
D 7 3 1680 6.32 643 585 173.3

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