ASTROSAT CZTI

Data Quality Report

Orbit 46276

Creation date: 2024-06-27T23:21:10.625483
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_072T01_9000006192_46276cztM0_level2.fits modeM0/AS1A13_072T01_9000006192_46276cztM0_level2_quad_clean.evt
Size (bytes)621,682,560122,042,880
Size592.9 MB 116.4 MB
Events in quadrant A6,609,171817,685
Events in quadrant B5,506,914835,276
Events in quadrant C3,385,129829,640
Events in quadrant D6,916,452677,940

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249870
B0216650
C0159380
D0260040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7684951.236335%
B76852353.057905%
C7685170.221210%
D768595212.387768%

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 7684 7684 19 19 0.25% 0.25%
B 7685 7685 80 80 1.04% 1.04%
C 7685 7685 5 5 0.07% 0.07%
D 7685 7685 837 837 10.89% 10.89%

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 3164453 18001.14 839 819 175.7
A 15 14 188547 1068.18 839 819 175.7
A 13 254 11973 63.47 839 819 175.7
B 3 112 1549053 9430.46 835 806 164.2
B 5 173 411135 2499.34 835 806 164.2
B 5 172 135899 822.86 835 806 164.2
C 12 2 65895 330.85 843 848 196.6
C 12 250 29252 144.47 843 848 196.6
C 13 61 5673 24.54 843 848 196.6
D 3 13 1466764 7461.05 786 759 196.5
D 1 52 1388355 7062.0 786 759 196.5
D 13 249 463801 2356.59 786 759 196.5

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