ASTROSAT CZTI

Data Quality Report

Orbit 46498

Creation date: 2024-06-27T23:23:53.402441
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_068T06_9000006220_46498cztM0_level2.fits modeM0/AS1A13_068T06_9000006220_46498cztM0_level2_quad_clean.evt
Size (bytes)787,230,720168,094,080
Size750.8 MB 160.3 MB
Events in quadrant A9,343,5071,112,135
Events in quadrant B5,394,1851,139,639
Events in quadrant C5,215,9511,109,774
Events in quadrant D8,363,193990,433

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343962
B0232752
C0232782
D0322642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106512502.347197%
B106521881.764927%
C106511060.995212%
D106515525.182612%

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 11996 10653 24 24 0.20% 0.23%
B 11997 10654 100 100 0.83% 0.94%
C 11996 10652 87 87 0.73% 0.82%
D 11996 10653 385 385 3.21% 3.61%

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 4729659 19208.78 1181 1155 246.2
A 13 254 18657 71.1 1181 1155 246.2
A 3 137 14061 52.43 1181 1155 246.2
B 15 201 360634 1536.33 1178 1138 234.0
B 5 255 100643 425.24 1178 1138 234.0
B 10 128 75062 315.92 1178 1138 234.0
C 14 254 562842 2037.62 1167 1175 275.6
C 1 3 69868 249.21 1167 1175 275.6
C 9 54 14610 48.74 1167 1175 275.6
D 1 52 2431568 8414.87 1143 1108 288.8
D 2 37 533913 1844.71 1143 1108 288.8
D 12 128 269355 928.74 1143 1108 288.8

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