ASTROSAT CZTI

Data Quality Report

Orbit 23420

Creation date: 2024-06-27T18:54:08.682268
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/AS1A07_127T02_9000003460_23420cztM0_level2.evt modeM0/AS1A07_127T02_9000003460_23420cztM0_level2_quad_clean.evt
Size (bytes)443,439,360116,484,480
Size422.9 MB 111.1 MB
Events in quadrant A3,215,656807,602
Events in quadrant B3,292,639820,266
Events in quadrant C3,172,614746,709
Events in quadrant D3,349,402742,869

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320417
B01345311
C01294811
D01345826

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01182
B01180
C01180
D01182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58791121.905086%
B58811392.363544%
C58811171.989458%
D5876921.565691%

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 7226 5886 0 0 0.00% 0.00%
B 7226 5885 2 2 0.03% 0.03%
C 7226 5886 0 0 0.00% 0.00%
D 7226 5886 6 6 0.08% 0.10%

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 9314 51.48 833 818 165.0
A 0 226 7356 39.61 833 818 165.0
A 3 137 6419 33.94 833 818 165.0
B 12 0 31239 199.47 820 804 152.6
B 0 190 30075 191.84 820 804 152.6
B 12 111 17383 108.66 820 804 152.6
C 14 238 125306 702.68 767 774 177.2
C 10 9 46075 255.62 767 774 177.2
C 3 233 10372 54.16 767 774 177.2
D 1 52 198558 1033.37 793 772 191.4
D 9 35 59902 308.94 793 772 191.4
D 12 227 47252 242.84 793 772 191.4

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