ASTROSAT CZTI

Data Quality Report

Orbit 25596

Creation date: 2024-06-27T19:19:21.997243
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_043T02_9000003726_25596cztM0_level2.evt modeM0/AS1A09_043T02_9000003726_25596cztM0_level2_quad_clean.evt
Size (bytes)652,942,080100,540,800
Size622.7 MB 95.9 MB
Events in quadrant A4,939,359652,696
Events in quadrant B3,860,487666,325
Events in quadrant C3,617,413630,075
Events in quadrant D6,866,478590,669

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193260
B0157510
C0152640
D0255370

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72473154.346626%
B72482733.766556%
C72482703.725166%
D724878610.844371%

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 7362 7249 17 17 0.23% 0.23%
B 7363 7250 15 15 0.20% 0.21%
C 7363 7250 0 0 0.00% 0.00%
D 7363 7250 451 451 6.13% 6.22%

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 6 16 682674 3611.71 921 900 188.8
A 8 192 665536 3520.92 921 900 188.8
A 4 2 39497 204.47 921 900 188.8
B 0 219 95210 535.54 914 891 176.1
B 5 172 69610 390.19 914 891 176.1
B 0 190 58292 325.92 914 891 176.1
C 14 238 138520 663.16 877 882 207.5
C 3 233 46939 221.91 877 882 207.5
C 2 16 12420 55.59 877 882 207.5
D 1 52 2647376 12272.44 877 851 215.6
D 8 195 442470 2047.87 877 851 215.6
D 2 244 275048 1271.5 877 851 215.6

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