ASTROSAT CZTI

Data Quality Report

Orbit 25296

Creation date: 2024-06-27T19:16:02.729760
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/AS1A09_022T01_9000003702_25296cztM0_level2.evt modeM0/AS1A09_022T01_9000003702_25296cztM0_level2_quad_clean.evt
Size (bytes)463,115,52090,423,360
Size441.7 MB 86.2 MB
Events in quadrant A3,194,079575,480
Events in quadrant B3,332,840578,400
Events in quadrant C3,257,834555,050
Events in quadrant D3,771,437548,126

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139850
B0142540
C0140830
D0156890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6908430.622467%
B6908500.723798%
C6908660.955414%
D6908390.564563%

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 7783 6909 0 0 0.00% 0.00%
B 7783 6909 2 2 0.03% 0.03%
C 7783 6909 0 0 0.00% 0.00%
D 7783 6909 4 4 0.05% 0.06%

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 11480 63.84 827 810 167.1
A 3 137 7427 39.59 827 810 167.1
A 0 226 7007 37.07 827 810 167.1
B 3 112 41605 256.95 823 801 158.8
B 0 190 41290 254.97 823 801 158.8
B 12 111 19190 115.8 823 801 158.8
C 14 238 126470 678.3 793 796 185.3
C 3 233 30934 162.66 793 796 185.3
C 13 61 5541 25.61 793 796 185.3
D 1 52 340574 1742.23 801 777 195.0
D 8 195 247316 1264.07 801 777 195.0
D 12 233 107578 547.6 801 777 195.0

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