ASTROSAT CZTI

Data Quality Report

Orbit 35137

Creation date: 2022-03-29T06:32:45.112475
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/AS1A11_047T09_9000005028_35137cztM0_level2.evt modeM0/AS1A11_047T09_9000005028_35137cztM0_level2_quad_clean.evt
Size (bytes)557,228,16072,892,800
Size531.4 MB 69.5 MB
Events in quadrant A3,237,490454,362
Events in quadrant B3,315,485466,879
Events in quadrant C3,468,816455,528
Events in quadrant D6,449,218412,559

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133043
B0136882
C0139292
D0233222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59831452.423533%
B5983971.621260%
C59831252.089253%
D598361910.345980%

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 8699 5985 96 96 1.10% 1.60%
B 8699 5985 57 57 0.66% 0.95%
C 8699 5985 91 91 1.05% 1.52%
D 8699 5985 498 498 5.72% 8.32%

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 15 169 458486 3298.52 689 678 138.8
A 10 83 92037 658.24 689 678 138.8
A 13 6 11936 81.11 689 678 138.8
B 5 172 211943 1548.95 692 674 136.4
B 3 112 107603 783.97 692 674 136.4
B 5 200 90446 658.18 692 674 136.4
C 0 10 405710 2586.62 674 680 156.6
C 15 214 249532 1589.23 674 680 156.6
C 14 67 120759 766.85 674 680 156.6
D 8 195 2184351 13606.61 657 640 160.5
D 12 233 224180 1392.87 657 640 160.5
D 2 153 222612 1383.1 657 640 160.5

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