ASTROSAT CZTI

Data Quality Report

Orbit 26738

Creation date: 2024-06-27T19:32:17.825941
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_26738cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26738cztM0_level2_quad_clean.evt
Size (bytes)519,456,96072,636,480
Size495.4 MB 69.3 MB
Events in quadrant A3,453,103435,895
Events in quadrant B3,588,664437,885
Events in quadrant C3,415,593426,819
Events in quadrant D4,807,397419,412

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144110
B0148170
C0142330
D0187930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68781271.846467%
B68781792.602501%
C68781742.529805%
D68783074.463507%

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 7498 6879 0 0 0.00% 0.00%
B 7498 6878 27 27 0.36% 0.39%
C 7498 6879 3 3 0.04% 0.04%
D 7498 6879 137 137 1.83% 1.99%

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 6 16 42830 237.75 876 857 176.5
A 0 13 27596 151.46 876 857 176.5
A 13 254 11487 60.21 876 857 176.5
B 0 189 145734 879.89 860 839 164.7
B 3 112 47897 285.76 860 839 164.7
B 10 246 23614 138.3 860 839 164.7
C 14 238 134619 684.02 831 833 195.6
C 15 208 20941 102.81 831 833 195.6
C 3 233 16803 81.65 831 833 195.6
D 1 52 842318 3841.96 835 814 219.0
D 7 80 283306 1289.74 835 814 219.0
D 2 250 246224 1120.44 835 814 219.0

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