ASTROSAT CZTI

Data Quality Report

Orbit 06742

Creation date: 2024-06-27T15:11:09.279217
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/AS1G06_087T01_9000000926_06742cztM0_level2.evt modeM0/AS1G06_087T01_9000000926_06742cztM0_level2_quad_clean.evt
Size (bytes)288,031,68053,475,840
Size274.7 MB 51.0 MB
Events in quadrant A2,649,944320,857
Events in quadrant B1,767,735345,839
Events in quadrant C1,644,253345,485
Events in quadrant D2,393,119330,015

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105041
B079410
C078660
D095990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39153478.863346%
B391570.178799%
C391520.051086%
D3915601.532567%

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 3915 3915 198 198 5.06% 5.06%
B 3915 3915 2 2 0.05% 0.05%
C 3915 3915 1 1 0.03% 0.03%
D 3915 3915 57 57 1.46% 1.46%

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 14 111 1009138 11973.89 407 398 84.2
A 8 15 74729 882.32 407 398 84.2
A 0 226 3855 41.04 407 398 84.2
B 4 81 37930 449.59 429 418 83.4
B 15 204 36062 427.2 429 418 83.4
B 0 214 20553 241.32 429 418 83.4
C 10 22 11842 118.78 409 410 96.2
C 8 128 10058 100.24 409 410 96.2
C 9 16 8864 87.84 409 410 96.2
D 8 195 348689 3438.28 410 397 101.3
D 2 33 305904 3015.92 410 397 101.3
D 2 136 51613 505.6 410 397 101.3

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