ASTROSAT CZTI

Data Quality Report

Orbit 11091

Creation date: 2024-06-27T16:08:11.513629
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/AS1G08_071T02_9000001620_11091cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11091cztM0_level2_quad_clean.evt
Size (bytes)615,683,52082,281,600
Size587.2 MB 78.5 MB
Events in quadrant A3,843,240492,646
Events in quadrant B5,269,541491,674
Events in quadrant C3,713,303496,448
Events in quadrant D5,289,409467,239

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165563
B0206952
C0164452
D0209722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78103694.724712%
B781084110.768246%
C78102433.111396%
D78106278.028169%

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 8450 7813 0 0 0.00% 0.00%
B 8450 7813 364 364 4.31% 4.66%
C 8450 7814 0 0 0.00% 0.00%
D 8450 7814 284 284 3.36% 3.63%

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 15 174 58238 287.37 960 933 199.4
A 1 162 23310 112.22 960 933 199.4
A 1 178 14541 68.24 960 933 199.4
B 10 16 987008 5490.08 919 895 179.6
B 4 239 568376 3159.39 919 895 179.6
B 15 204 31413 169.91 919 895 179.6
C 9 204 34511 152.95 939 942 219.5
C 13 61 7093 28.03 939 942 219.5
C 14 234 6103 23.52 939 942 219.5
D 10 253 807748 3637.14 913 883 221.8
D 10 157 581784 2618.55 913 883 221.8
D 1 52 127196 569.38 913 883 221.8

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