ASTROSAT CZTI

Data Quality Report

Orbit czti

Creation date: 2025-06-30T12:24:17.924442
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/AS1A13_065T06_9000005914_43874cztM0_level2.fits modeM0/AS1A13_065T06_9000005914_43874cztM0_level2_quad_clean.evt
Size (bytes)807,615,360147,343,680
Size770.2 MB 140.5 MB
Events in quadrant A8,993,354885,842
Events in quadrant B6,055,8891,030,829
Events in quadrant C6,780,051976,999
Events in quadrant D7,311,003891,114

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 11025 9752 914 914 8.29% 9.37%
B 11025 9750 269 269 2.44% 2.76%
C 11024 9749 282 282 2.56% 2.89%
D 11024 9749 563 563 5.11% 5.77%

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 15 223 3667875 17782.08 992 971 206.2
A 10 83 1316265 6378.31 992 971 206.2
A 7 16 71711 343.04 992 971 206.2
B 5 235 1306910 6351.54 1055 1025 205.6
B 4 170 222292 1076.19 1055 1025 205.6
B 5 172 127489 615.09 1055 1025 205.6
C 3 233 2100391 8644.18 1034 1036 242.9
C 12 16 331432 1360.42 1034 1036 242.9
C 14 254 158933 650.15 1034 1036 242.9
D 7 80 672845 2605.69 1025 993 257.8
D 5 235 559442 2165.87 1025 993 257.8
D 12 17 397964 1539.6 1025 993 257.8

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