ASTROSAT CZTI

Data Quality Report

Orbit 23558

Creation date: 2024-06-27T18:56:07.420793
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_011T01_9000003482_23558cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23558cztM0_level2_quad_clean.evt
Size (bytes)324,760,32050,731,200
Size309.7 MB 48.4 MB
Events in quadrant A2,271,780301,465
Events in quadrant B2,374,531305,386
Events in quadrant C2,372,565295,230
Events in quadrant D2,481,966289,500

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01007719
B01022210
C01021714
D01094631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4907300.611372%
B4907410.835541%
C4908761.548492%
D4897801.633653%

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 5609 4915 0 0 0.00% 0.00%
B 5609 4918 3 3 0.05% 0.06%
C 5609 4916 5 5 0.09% 0.10%
D 5609 4913 36 36 0.64% 0.73%

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 6 16 14058 112.58 584 571 119.8
A 13 254 8651 67.45 584 571 119.8
A 3 137 5342 39.82 584 571 119.8
B 0 189 43449 382.46 580 566 112.1
B 12 111 13850 118.48 580 566 112.1
B 12 0 13798 118.01 580 566 112.1
C 14 238 88016 666.61 558 562 131.2
C 3 233 67570 510.76 558 562 131.2
C 7 247 33286 249.44 558 562 131.2
D 1 52 218444 1569.55 565 549 138.8
D 12 233 35460 251.47 565 549 138.8
D 2 234 22699 159.55 565 549 138.8

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