ASTROSAT CZTI

Data Quality Report

Orbit 28976

Creation date: 2024-06-27T19:58:42.453122
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/AS1A10_048T03_9000004154_28976cztM0_level2.evt modeM0/AS1A10_048T03_9000004154_28976cztM0_level2_quad_clean.evt
Size (bytes)2,057,644,800320,192,640
Size1.9 GB 305.4 MB
Events in quadrant A11,958,0922,046,320
Events in quadrant B12,659,7232,076,737
Events in quadrant C12,082,8222,004,201
Events in quadrant D23,966,2441,886,559

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05158411
B05337511
C05131615
D0881835

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05000
B05000
C05000
D05000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A244742481.013320%
B244753601.470889%
C244733681.503698%
D2447823229.486069%

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 28833 24474 31 31 0.11% 0.13%
B 28834 24475 88 88 0.31% 0.36%
C 28834 24476 4 4 0.01% 0.02%
D 28834 24476 1895 1895 6.57% 7.74%

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 12 210 188967 305.97 3027 2958 607.9
A 13 6 53218 82.67 3027 2958 607.9
A 13 254 44573 68.45 3027 2958 607.9
B 10 245 421865 726.58 3010 2931 576.6
B 10 246 331489 569.83 3010 2931 576.6
B 12 111 72385 120.46 3010 2931 576.6
C 14 238 468176 677.49 2922 2945 686.7
C 3 233 111636 158.28 2922 2945 686.7
C 0 207 60559 83.9 2922 2945 686.7
D 8 195 5476012 8189.49 2828 2757 668.3
D 1 52 3464769 5180.12 2828 2757 668.3
D 7 80 2595510 3879.47 2828 2757 668.3

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