ASTROSAT CZTI

Data Quality Report

Orbit 26350

Creation date: 2024-06-27T19:27:48.009735
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/AS1A09_038T04_9000003802_26350cztM0_level2.evt modeM0/AS1A09_038T04_9000003802_26350cztM0_level2_quad_clean.evt
Size (bytes)477,599,040109,457,280
Size455.5 MB 104.4 MB
Events in quadrant A2,678,643735,518
Events in quadrant B2,769,169748,114
Events in quadrant C4,851,163701,618
Events in quadrant D3,764,570717,325

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119950
B0120690
C0183740
D0150580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5899991.678251%
B58991031.746059%
C58995819.849127%
D58991362.305476%

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 5899 5899 0 0 0.00% 0.00%
B 5899 5899 1 1 0.02% 0.02%
C 5899 5899 188 188 3.19% 3.19%
D 5899 5899 38 38 0.64% 0.64%

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 9364 61.74 694 677 140.7
A 3 137 6532 41.61 694 677 140.7
A 0 226 5814 36.51 694 677 140.7
B 0 230 39845 292.34 693 673 134.0
B 12 111 16202 115.89 693 673 134.0
B 11 111 14431 102.67 693 673 134.0
C 3 233 2177870 14174.81 655 657 153.6
C 14 238 104117 673.58 655 657 153.6
C 0 239 8048 48.12 655 657 153.6
D 1 52 1120553 6953.51 678 660 161.1
D 2 234 27644 167.55 678 660 161.1
D 13 168 26531 160.64 678 660 161.1

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