ASTROSAT CZTI

Data Quality Report

Orbit 02139

Creation date: 2024-06-27T14:14:29.377715
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/AS1T01_072T02_9000000336_02139cztM0_level2.evt modeM0/AS1T01_072T02_9000000336_02139cztM0_level2_quad_clean.evt
Size (bytes)400,953,60079,038,720
Size382.4 MB 75.4 MB
Events in quadrant A2,523,108501,091
Events in quadrant B4,203,348496,775
Events in quadrant C2,527,466485,693
Events in quadrant D2,471,422481,359

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124961
B0167861
C0125151
D0125911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6139490.798176%
B6139490.798176%
C6139450.733018%
D6139480.781886%

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 7179 6140 0 0 0.00% 0.00%
B 7179 6140 0 0 0.00% 0.00%
C 7179 6140 0 0 0.00% 0.00%
D 7179 6140 5 5 0.07% 0.08%

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 15 171 11004 80.63 650 637 128.6
A 0 1 7844 56.05 650 637 128.6
A 14 238 7288 51.73 650 637 128.6
B 5 68 1587887 13169.08 664 651 120.5
B 0 234 41539 339.24 664 651 120.5
B 0 168 14620 115.9 664 651 120.5
C 9 85 22459 157.42 633 637 138.6
C 10 65 12219 83.55 633 637 138.6
C 10 82 6137 39.68 633 637 138.6
D 9 64 36555 252.03 631 617 142.6
D 13 53 26749 183.26 631 617 142.6
D 2 54 8283 53.76 631 617 142.6

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