ASTROSAT CZTI

Data Quality Report

Orbit 47912

Creation date: 2024-08-07T12:04:43.836947
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/AS1A13_074T02_9000006378_47912cztM0_level2.fits modeM0/AS1A13_074T02_9000006378_47912cztM0_level2_quad_clean.evt
Size (bytes)467,303,040106,240,320
Size445.7 MB 101.3 MB
Events in quadrant A7,171,485675,476
Events in quadrant B3,027,527735,931
Events in quadrant C2,898,848713,630
Events in quadrant D3,690,692634,493

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259381
B0136431
C0134851
D0158622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65604586.981707%
B6561711.082152%
C6561490.746837%
D65602603.963415%

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 7525 6562 203 203 2.70% 3.09%
B 7526 6563 1 1 0.01% 0.02%
C 7526 6563 1 1 0.01% 0.02%
D 7525 6562 172 172 2.29% 2.62%

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 10 83 3705843 24741.29 711 695 149.8
A 13 248 716896 4782.46 711 695 149.8
A 3 137 8310 50.85 711 695 149.8
B 0 200 66323 455.07 728 705 144.2
B 0 198 42958 293.03 728 705 144.2
B 4 80 18962 126.61 728 705 144.2
C 0 207 23815 133.09 734 736 173.4
C 12 2 9061 48.01 734 736 173.4
C 14 67 5080 25.05 734 736 173.4
D 13 29 365696 2016.1 722 699 181.0
D 11 224 268283 1478.03 722 699 181.0
D 10 204 150582 827.9 722 699 181.0

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