ASTROSAT CZTI

Data Quality Report

Orbit 34309

Creation date: 2022-02-01T07:34:28.403072
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/AS1A11_091T01_9000004894_34309cztM0_level2.evt modeM0/AS1A11_091T01_9000004894_34309cztM0_level2_quad_clean.evt
Size (bytes)298,920,96049,717,440
Size285.1 MB 47.4 MB
Events in quadrant A1,634,813315,689
Events in quadrant B2,160,355320,330
Events in quadrant C1,817,502319,063
Events in quadrant D3,196,380297,234

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072361
B088800
C075760
D0119900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A356950.140095%
B3569651.821238%
C3569130.364248%
D35692166.052115%

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 5512 3570 0 0 0.00% 0.00%
B 5512 3570 38 38 0.69% 1.06%
C 5512 3570 6 6 0.11% 0.17%
D 5512 3570 142 142 2.58% 3.98%

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 10 83 14646 168.58 414 407 84.5
A 13 6 9193 104.02 414 407 84.5
A 9 143 8109 91.19 414 407 84.5
B 4 171 155464 1945.46 411 400 79.7
B 5 172 126941 1587.61 411 400 79.7
B 5 31 90114 1125.57 411 400 79.7
C 15 214 151627 1623.27 401 403 93.2
C 0 10 51552 549.04 401 403 93.2
C 14 67 29967 317.35 401 403 93.2
D 10 118 448057 4615.09 393 382 97.0
D 12 235 419259 4318.21 393 382 97.0
D 8 195 343698 3539.25 393 382 97.0

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