ASTROSAT CZTI

Data Quality Report

Orbit 50618

Creation date: 2025-02-05T21:38:57.979891
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/AS1T05_239T01_9000006444_50618cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50618cztM0_level2_quad_clean.evt
Size (bytes)2,381,834,880213,540,480
Size2.2 GB 203.6 MB
Events in quadrant A11,654,0971,678,379
Events in quadrant B24,604,3241,345,528
Events in quadrant C31,031,578829,383
Events in quadrant D19,429,3421,315,480

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0471542
B0861332
C01053382
D0707923

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187995973.175701%
B18799549629.235598%
C18799985452.417682%
D18799286615.245492%

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 19869 18800 329 329 1.66% 1.75%
B 19868 18798 4706 4706 23.69% 25.03%
C 19869 18799 8239 8239 41.47% 43.83%
D 19869 18800 2680 2680 13.49% 14.26%

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 12 250 797045 1623.75 1996 1952 489.7
A 4 3 489291 995.25 1996 1952 489.7
A 4 156 324895 659.52 1996 1952 489.7
B 4 170 6417039 17271.68 1739 1677 371.4
B 3 249 4594478 12364.91 1739 1677 371.4
B 2 176 2173746 5847.72 1739 1677 371.4
C 15 158 9467426 24228.49 1405 1393 390.7
C 15 157 4216432 10788.47 1405 1393 390.7
C 0 209 3451932 8831.72 1405 1393 390.7
D 7 60 1817974 3566.13 1852 1795 509.3
D 7 126 1673922 3283.28 1852 1795 509.3
D 14 226 859541 1684.22 1852 1795 509.3

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