ASTROSAT CZTI

Data Quality Report

Orbit 17708

Creation date: 2024-06-27T17:39:51.839605
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/AS1T03_040T01_9000002628_17708cztM0_level2.evt modeM0/AS1T03_040T01_9000002628_17708cztM0_level2_quad_clean.evt
Size (bytes)653,423,04082,414,080
Size623.2 MB 78.6 MB
Events in quadrant A3,506,141516,832
Events in quadrant B4,031,347523,494
Events in quadrant C3,776,264504,198
Events in quadrant D7,962,207423,627

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154892
B0167632
C0158932
D0288342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75691021.347602%
B75701732.285337%
C75691251.651473%
D7569146919.408112%

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 8165 7571 2 2 0.02% 0.03%
B 8166 7572 41 41 0.50% 0.54%
C 8165 7571 0 0 0.00% 0.00%
D 8165 7569 1081 1081 13.24% 14.28%

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 15 174 16513 84.57 904 883 184.8
A 14 234 10265 50.77 904 883 184.8
A 0 226 7769 37.26 904 883 184.8
B 10 245 267789 1536.6 898 875 173.7
B 0 189 73758 419.58 898 875 173.7
B 7 220 58122 329.57 898 875 173.7
C 3 233 228292 1121.04 860 863 202.9
C 14 238 133533 653.96 860 863 202.9
C 5 218 46799 226.43 860 863 202.9
D 7 238 4797471 24476.22 803 777 196.0
D 10 70 88585 448.06 803 777 196.0
D 2 234 29894 148.58 803 777 196.0

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