ASTROSAT CZTI

Data Quality Report

Orbit 50886

Creation date: 2025-02-24T10:04:32.619335
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/AS1C07_001T01_9000006450_50886cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50886cztM0_level2_quad_clean.evt
Size (bytes)481,887,36085,132,800
Size459.6 MB 81.2 MB
Events in quadrant A5,051,716547,756
Events in quadrant B3,382,071611,993
Events in quadrant C3,829,569527,130
Events in quadrant D5,121,385483,087

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189821
B0141161
C0152131
D0192281

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58364868.327622%
B58372153.683399%
C58373185.448004%
D58375279.028611%

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 6936 5838 273 273 3.94% 4.68%
B 6937 5839 79 79 1.14% 1.35%
C 6937 5839 160 160 2.31% 2.74%
D 6937 5839 294 294 4.24% 5.04%

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 4 4 1406156 9154.79 620 603 153.5
A 7 206 326332 2121.57 620 603 153.5
A 3 130 147038 953.77 620 603 153.5
B 4 206 315124 2373.12 627 605 132.5
B 8 128 155102 1165.71 627 605 132.5
B 10 247 100651 754.87 627 605 132.5
C 1 29 509044 3047.15 611 604 166.9
C 5 10 160606 958.91 611 604 166.9
C 13 3 124228 740.9 611 604 166.9
D 7 45 826928 4928.97 598 577 167.7
D 10 181 507918 3026.15 598 577 167.7
D 2 249 293737 1748.62 598 577 167.7

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