ASTROSAT CZTI

Data Quality Report

Orbit 24550

Creation date: 2024-06-27T19:07:09.709214
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_187T01_9000003608_24550cztM0_level2.evt modeM0/AS1T03_187T01_9000003608_24550cztM0_level2_quad_clean.evt
Size (bytes)600,906,240114,612,480
Size573.1 MB 109.3 MB
Events in quadrant A3,245,033805,540
Events in quadrant B3,451,589809,483
Events in quadrant C3,801,877741,229
Events in quadrant D7,277,562678,757

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134252
B0140222
C0153373
D0261132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6249661.056169%
B62491171.872300%
C62481953.120999%
D624887914.068502%

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 7524 6250 0 0 0.00% 0.00%
B 7524 6250 30 30 0.40% 0.48%
C 7523 6249 58 58 0.77% 0.93%
D 7523 6249 744 744 9.89% 11.91%

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 9747 54.12 841 827 164.8
A 0 226 7406 39.91 841 827 164.8
A 3 137 6917 36.95 841 827 164.8
B 3 64 200381 1306.89 824 807 152.7
B 0 190 22789 143.95 824 807 152.7
B 12 111 17875 111.77 824 807 152.7
C 2 16 601818 3417.76 774 779 175.9
C 14 238 128509 726.33 774 779 175.9
C 5 112 41021 228.83 774 779 175.9
D 8 195 2039790 11232.61 748 726 181.5
D 1 52 1777008 9785.02 748 726 181.5
D 12 218 475878 2617.47 748 726 181.5

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