ASTROSAT CZTI

Data Quality Report

Orbit 26305

Creation date: 2024-06-27T19:27:14.509398
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/AS1A09_143T03_9000003794_26305cztM0_level2.evt modeM0/AS1A09_143T03_9000003794_26305cztM0_level2_quad_clean.evt
Size (bytes)437,909,76082,229,760
Size417.6 MB 78.4 MB
Events in quadrant A3,127,247502,497
Events in quadrant B3,147,649520,086
Events in quadrant C3,359,365496,728
Events in quadrant D3,160,453491,874

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138520
B0138370
C0144270
D0141850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A687560.087273%
B687640.058173%
C68771001.454122%
D6877190.276283%

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 10422 6876 0 0 0.00% 0.00%
B 10422 6877 0 0 0.00% 0.00%
C 10423 6878 59 59 0.57% 0.86%
D 10423 6878 13 13 0.12% 0.19%

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 13 33845 203.53 802 787 162.4
A 13 254 10299 58.56 802 787 162.4
A 3 137 7323 40.24 802 787 162.4
B 12 111 18512 116.75 797 778 151.9
B 0 230 17511 110.16 797 778 151.9
B 11 111 16887 106.05 797 778 151.9
C 2 16 194630 1067.72 770 775 181.6
C 14 238 122961 672.98 770 775 181.6
C 3 233 41459 224.08 770 775 181.6
D 11 176 75893 401.19 785 768 187.3
D 1 52 72972 385.59 785 768 187.3
D 8 195 32257 168.16 785 768 187.3

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