ASTROSAT CZTI

Data Quality Report

Orbit 48102

Creation date: 2024-08-20T09:12:01.140834
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_071T03_9000006400_48102cztM0_level2.fits modeM0/AS1A13_071T03_9000006400_48102cztM0_level2_quad_clean.evt
Size (bytes)498,369,60096,814,080
Size475.3 MB 92.3 MB
Events in quadrant A8,380,870798,695
Events in quadrant B1,394,486230
Events in quadrant C3,629,556836,148
Events in quadrant D4,415,687742,716

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301812
B085562
C0167722
D0190772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79594916.169117%
B7960795899.974874%
C7960780.979899%
D79602733.429648%

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 9164 7962 98 98 1.07% 1.23%
B 9164 7959 1 1 0.01% 0.01%
C 9165 7963 6 6 0.07% 0.08%
D 9165 7962 174 174 1.90% 2.19%

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 4750398 25506.87 880 860 186.2
A 14 248 193730 1035.79 880 860 186.2
A 7 3 20298 104.39 880 860 186.2
B 2 177 1096607 78447.0 58 57 14.0
B 5 32 26607 1899.38 58 57 14.0
B 4 21 13440 957.42 58 57 14.0
C 14 254 82537 392.58 883 887 208.0
C 12 2 48038 226.7 883 887 208.0
C 12 250 44110 207.82 883 887 208.0
D 2 165 634288 2867.56 870 841 220.9
D 2 37 129043 580.36 870 841 220.9
D 2 249 88615 397.35 870 841 220.9

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