ASTROSAT CZTI

Data Quality Report

Orbit 29476

Creation date: 2024-06-27T20:04:29.783404
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_102T09_9000004242_29476cztM0_level2.evt modeM0/AS1A10_102T09_9000004242_29476cztM0_level2_quad_clean.evt
Size (bytes)768,119,04095,204,160
Size732.5 MB 90.8 MB
Events in quadrant A3,661,494620,951
Events in quadrant B3,727,821629,421
Events in quadrant C3,923,253602,625
Events in quadrant D11,450,296514,466

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154520
B0156390
C0158580
D0392504

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73992393.230166%
B74002843.837838%
C74002473.337838%
D7399189325.584538%

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 7399 7399 0 0 0.00% 0.00%
B 7400 7400 12 12 0.16% 0.16%
C 7400 7400 0 0 0.00% 0.00%
D 7399 7399 1709 1709 23.10% 23.10%

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 1 113 15833 77.59 942 920 192.2
A 13 254 13307 64.45 942 920 192.2
A 12 96 9509 44.69 942 920 192.2
B 0 229 29602 157.74 929 902 181.9
B 12 111 22668 119.63 929 902 181.9
B 11 111 20619 108.37 929 902 181.9
C 3 233 269019 1273.58 895 899 210.5
C 14 238 141739 668.99 895 899 210.5
C 2 114 17532 79.01 895 899 210.5
D 8 195 5834405 28645.19 848 824 203.6
D 1 52 1579626 7752.54 848 824 203.6
D 7 223 387260 1897.55 848 824 203.6

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