ASTROSAT CZTI

Data Quality Report

Orbit 26926

Creation date: 2024-06-27T19:34:35.117128
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_134T01_9000003896_26926cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26926cztM0_level2_quad_clean.evt
Size (bytes)977,515,20079,424,640
Size932.2 MB 75.7 MB
Events in quadrant A14,269,543255,407
Events in quadrant B4,394,583587,658
Events in quadrant C3,490,568581,296
Events in quadrant D6,988,173502,328

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470270
B0172510
C0143190
D0253350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6837542279.303788%
B68373775.514114%
C68371892.764370%
D6837105215.386866%

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 7602 6837 4560 4560 59.98% 66.70%
B 7602 6837 171 171 2.25% 2.50%
C 7602 6837 0 0 0.00% 0.00%
D 7602 6837 935 935 12.30% 13.68%

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 14 235 12460861 141433.0 443 436 88.1
A 6 16 57860 651.8 443 436 88.1
A 8 192 29021 324.46 443 436 88.1
B 0 189 642530 3906.44 864 842 164.3
B 3 64 208120 1261.86 864 842 164.3
B 15 33 67389 405.12 864 842 164.3
C 14 238 135875 685.09 851 856 197.1
C 15 208 20875 101.58 851 856 197.1
C 15 127 12607 59.62 851 856 197.1
D 7 80 2177676 11252.97 809 790 193.4
D 2 250 1144187 5910.56 809 790 193.4
D 15 36 539441 2784.45 809 790 193.4

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