ASTROSAT CZTI

Data Quality Report

Orbit 26723

Creation date: 2024-06-27T19:32:09.330414
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/AS1T03_223T01_9000003850_26723cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26723cztM0_level2_quad_clean.evt
Size (bytes)625,512,96071,867,520
Size596.5 MB 68.5 MB
Events in quadrant A3,662,470452,283
Events in quadrant B6,669,120360,498
Events in quadrant C3,510,684443,571
Events in quadrant D4,631,029435,592

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149740
B0240470
C0144730
D0182760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69421141.642178%
B6942146521.103428%
C69421271.829444%
D69423264.696053%

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 7832 6943 20 20 0.26% 0.29%
B 7832 6943 1219 1219 15.56% 17.56%
C 7832 6943 0 0 0.00% 0.00%
D 7832 6943 186 186 2.37% 2.68%

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 190787 1051.05 900 881 180.7
A 13 254 12176 62.51 900 881 180.7
A 3 137 8237 40.71 900 881 180.7
B 0 189 3377966 22007.31 810 792 153.5
B 3 112 65877 424.13 810 792 153.5
B 10 246 38982 248.86 810 792 153.5
C 14 238 136233 677.92 854 861 199.7
C 15 208 33272 162.31 854 861 199.7
C 14 176 7914 35.32 854 861 199.7
D 2 250 444324 2102.37 863 838 210.9
D 7 80 429166 2030.51 863 838 210.9
D 1 52 412651 1952.22 863 838 210.9

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