ASTROSAT CZTI

Data Quality Report

Orbit 26222

Creation date: 2024-06-27T19:26:16.215720
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/AS1C05_019T04_9000003788_26222cztM0_level2.evt modeM0/AS1C05_019T04_9000003788_26222cztM0_level2_quad_clean.evt
Size (bytes)1,303,845,120339,534,720
Size1.2 GB 323.8 MB
Events in quadrant A8,336,1992,306,714
Events in quadrant B8,660,1642,317,067
Events in quadrant C10,178,1562,217,556
Events in quadrant D11,079,8082,186,576

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370500
B0379000
C0421900
D0453650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182391110.608586%
B182401800.986842%
C182404082.236842%
D182406103.344298%

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 20099 18242 0 0 0.00% 0.00%
B 20100 18243 30 30 0.15% 0.16%
C 20100 18243 77 77 0.38% 0.42%
D 20100 18243 414 414 2.06% 2.27%

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 13 254 30743 66.62 2154 2106 429.8
A 0 13 28432 61.25 2154 2106 429.8
A 3 137 19924 41.45 2154 2106 429.8
B 5 172 181337 443.15 2140 2082 404.5
B 0 190 97738 236.48 2140 2082 404.5
B 12 111 48732 115.33 2140 2082 404.5
C 3 233 1768768 3672.82 2063 2071 481.0
C 14 238 326246 673.93 2063 2071 481.0
C 2 16 45651 90.6 2063 2071 481.0
D 1 52 1749979 3534.81 2073 2020 494.5
D 7 38 451364 908.69 2073 2020 494.5
D 13 174 280262 562.67 2073 2020 494.5

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