ASTROSAT CZTI

Data Quality Report

Orbit 27899

Creation date: 2024-06-27T19:45:46.128164
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/AS1A10_048T06_9000004030_27899cztM0_level2.evt modeM0/AS1A10_048T06_9000004030_27899cztM0_level2_quad_clean.evt
Size (bytes)630,250,56086,999,040
Size601.1 MB 83.0 MB
Events in quadrant A3,303,590571,697
Events in quadrant B3,498,629573,228
Events in quadrant C3,476,545543,903
Events in quadrant D8,319,048442,354

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146450
B0151030
C0148710
D0297220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7221260.360061%
B7221390.540091%
C7221761.052486%
D7221164722.808475%

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 7656 7222 1 1 0.01% 0.01%
B 7656 7221 3 3 0.04% 0.04%
C 7656 7221 1 1 0.01% 0.01%
D 7656 7221 1382 1382 18.05% 19.14%

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 13 254 10814 57.59 854 836 173.2
A 3 137 8356 43.41 854 836 173.2
A 0 226 7254 37.04 854 836 173.2
B 0 230 99753 602.98 849 828 164.1
B 10 245 29617 175.48 849 828 164.1
B 12 111 20603 120.54 849 828 164.1
C 14 238 131205 678.22 817 821 192.2
C 3 233 120450 622.27 817 821 192.2
C 2 16 39453 200.95 817 821 192.2
D 1 52 3978544 23040.17 720 700 172.6
D 8 195 987985 5718.48 720 700 172.6
D 7 238 335670 1940.19 720 700 172.6

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