ASTROSAT CZTI

Data Quality Report

Orbit 27178

Creation date: 2024-06-27T19:37:24.485440
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_243T01_9000003918_27178cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27178cztM0_level2_quad_clean.evt
Size (bytes)565,992,00082,414,080
Size539.8 MB 78.6 MB
Events in quadrant A3,559,919521,487
Events in quadrant B3,434,117531,759
Events in quadrant C3,337,786508,892
Events in quadrant D6,344,697455,565

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146460
B0142530
C0141100
D0232960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6855741.079504%
B6856811.181447%
C68551041.517141%
D685594513.785558%

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 7725 6856 1 1 0.01% 0.01%
B 7726 6857 1 1 0.01% 0.01%
C 7725 6856 0 0 0.00% 0.00%
D 7725 6856 777 777 10.06% 11.33%

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 124147 707.59 860 841 174.3
A 6 16 97304 553.55 860 841 174.3
A 15 174 13333 71.69 860 841 174.3
B 0 190 37871 223.23 856 834 165.9
B 12 111 20808 120.39 856 834 165.9
B 0 245 19701 113.72 856 834 165.9
C 14 238 131639 676.12 821 824 193.5
C 15 208 7902 36.58 821 824 193.5
C 13 61 5344 23.36 821 824 193.5
D 12 1 2305102 12428.1 787 769 185.4
D 1 52 814868 4390.73 787 769 185.4
D 2 250 182360 979.39 787 769 185.4

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