ASTROSAT CZTI

Data Quality Report

Orbit 18593

Creation date: 2024-06-27T17:52:05.778056
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/AS1A05_075T05_9000002764_18593cztM0_level2.evt modeM0/AS1A05_075T05_9000002764_18593cztM0_level2_quad_clean.evt
Size (bytes)956,485,440146,517,120
Size912.2 MB 139.7 MB
Events in quadrant A5,638,831918,678
Events in quadrant B5,779,123940,921
Events in quadrant C9,119,082834,866
Events in quadrant D7,592,903887,008

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249832
B0251722
C0348032
D0306303

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12378510.412021%
B12378520.420100%
C12378162013.087736%
D123773302.666236%

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 13708 12380 0 0 0.00% 0.00%
B 13708 12380 1 1 0.01% 0.01%
C 13708 12380 1226 1226 8.94% 9.90%
D 13707 12379 241 241 1.76% 1.95%

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 20284 63.98 1455 1421 294.8
A 0 13 14857 45.57 1455 1421 294.8
A 0 226 12606 37.93 1455 1421 294.8
B 0 229 35102 121.13 1451 1410 278.2
B 12 111 34243 118.04 1451 1410 278.2
B 11 111 29642 101.5 1451 1410 278.2
C 4 254 3507629 11541.28 1293 1300 303.8
C 3 233 354650 1163.07 1293 1300 303.8
C 14 238 200679 656.27 1293 1300 303.8
D 1 52 864155 2533.15 1402 1361 340.6
D 7 238 726951 2130.32 1402 1361 340.6
D 10 50 397209 1162.2 1402 1361 340.6

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