ASTROSAT CZTI

Data Quality Report

Orbit 07985

Creation date: 2024-06-27T15:26:23.863524
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/AS1G06_077T01_9000001090_07985cztM0_level2.evt modeM0/AS1G06_077T01_9000001090_07985cztM0_level2_quad_clean.evt
Size (bytes)518,947,20059,420,160
Size494.9 MB 56.7 MB
Events in quadrant A7,583,975282,424
Events in quadrant B2,150,080414,839
Events in quadrant C2,204,897412,093
Events in quadrant D3,471,367372,268

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256491
B095461
C095251
D0133631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4503237852.809238%
B4503230.510771%
C450330.066622%
D45033808.438819%

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 4503 4503 2051 2051 45.55% 45.55%
B 4503 4503 7 7 0.16% 0.16%
C 4503 4503 0 0 0.00% 0.00%
D 4503 4503 359 359 7.97% 7.97%

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 0 128 6313768 94297.16 324 316 67.0
A 15 239 17955 263.45 324 316 67.0
A 0 226 2922 38.92 324 316 67.0
B 4 239 70630 687.45 525 511 102.0
B 11 51 18579 177.14 525 511 102.0
B 4 173 13723 129.53 525 511 102.0
C 1 16 193160 1599.71 515 517 120.4
C 13 61 3758 26.91 515 517 120.4
C 12 4 3229 22.52 515 517 120.4
D 1 52 1584830 13127.61 493 478 120.7
D 13 169 14420 115.52 493 478 120.7
D 2 234 13788 110.28 493 478 120.7

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