ASTROSAT CZTI

Data Quality Report

Orbit 15254

Creation date: 2024-06-27T17:05:55.152773
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/AS1T02_073T01_9000002252_15254cztM0_level2.evt modeM0/AS1T02_073T01_9000002252_15254cztM0_level2_quad_clean.evt
Size (bytes)440,066,880107,939,520
Size419.7 MB 102.9 MB
Events in quadrant A3,033,881716,950
Events in quadrant B3,450,800727,595
Events in quadrant C3,347,858717,232
Events in quadrant D3,086,619687,559

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129882
B0143061
C0138291
D0131011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6016691.146941%
B60161622.692819%
C6016891.479388%
D6016821.363032%

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 7262 6017 0 0 0.00% 0.00%
B 7262 6017 77 77 1.06% 1.28%
C 7262 6017 23 23 0.32% 0.38%
D 7262 6017 12 12 0.17% 0.20%

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 12 189 53869 341.93 776 761 155.3
A 0 226 6783 38.77 776 761 155.3
A 12 194 5738 32.04 776 761 155.3
B 10 16 252386 1742.36 772 754 144.4
B 10 245 138127 951.2 772 754 144.4
B 0 214 20006 133.3 772 754 144.4
C 3 233 253911 1449.34 765 772 174.7
C 14 234 70947 401.79 765 772 174.7
C 4 254 41316 232.13 765 772 174.7
D 2 33 124678 679.44 763 742 182.4
D 13 122 39074 210.14 763 742 182.4
D 2 234 20420 107.88 763 742 182.4

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