ASTROSAT CZTI

Data Quality Report

Orbit 33797

Creation date: 2024-06-27T20:52:53.318771
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_091T01_9000004822_33797cztM0_level2.evt modeM0/AS1T04_091T01_9000004822_33797cztM0_level2_quad_clean.evt
Size (bytes)98,729,28013,559,040
Size94.2 MB 12.9 MB
Events in quadrant A992,55782,317
Events in quadrant B494,65190,737
Events in quadrant C568,43687,433
Events in quadrant D873,99983,034

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035492
B019451
C022951
D032381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85020323.882353%
B85060.705882%
C850111.294118%
D85091.058824%

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 850 850 138 138 16.24% 16.24%
B 850 850 2 2 0.24% 0.24%
C 850 850 11 11 1.29% 1.29%
D 850 850 6 6 0.71% 0.71%

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 15 237 572196 24919.61 107 105 23.0
A 10 83 4378 186.13 107 105 23.0
A 13 6 1807 74.14 107 105 23.0
B 5 172 29161 1229.93 114 112 23.6
B 15 222 5234 216.86 114 112 23.6
B 0 197 2801 113.85 114 112 23.6
C 0 10 51654 1872.58 112 113 27.5
C 15 214 42509 1540.32 112 113 27.5
C 4 254 21189 765.73 112 113 27.5
D 8 195 290566 10035.25 114 111 28.9
D 12 235 73007 2518.56 114 111 28.9
D 2 250 35431 1220.31 114 111 28.9

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