ASTROSAT CZTI

Data Quality Report

Orbit 31788

Creation date: 2024-06-27T20:32:44.877890
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/AS1T04_036T01_9000004640_31788cztM0_level2.evt modeM0/AS1T04_036T01_9000004640_31788cztM0_level2_quad_clean.evt
Size (bytes)178,280,64038,180,160
Size170.0 MB 36.4 MB
Events in quadrant A1,132,604271,650
Events in quadrant B1,430,996273,629
Events in quadrant C938,162262,170
Events in quadrant D1,787,285230,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045040
B051780
C038560
D065570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1593633.954802%
B1594120.752823%
C159490.564617%
D159429218.318695%

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 1593 1593 29 29 1.82% 1.82%
B 1594 1594 3 3 0.19% 0.19%
C 1594 1594 1 1 0.06% 0.06%
D 1594 1594 207 207 12.99% 12.99%

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 0 13 241052 5020.6 230 226 48.0
A 13 6 5135 102.34 230 226 48.0
A 13 254 2885 55.43 230 226 48.0
B 6 159 454988 10567.31 224 219 43.0
B 5 172 60542 1401.7 224 219 43.0
B 10 245 12226 279.0 224 219 43.0
C 14 238 35165 679.67 216 219 51.4
C 0 10 25910 499.67 216 219 51.4
C 3 233 17545 336.98 216 219 51.4
D 13 249 696646 14074.61 204 200 49.5
D 8 195 183524 3704.83 204 200 49.5
D 12 218 84510 1703.84 204 200 49.5

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