ASTROSAT CZTI

Data Quality Report

Orbit 02490

Creation date: 2024-06-27T14:18:36.319377
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/AS1T01_046T01_9000000372_02490cztM0_level2.fits modeM0/AS1T01_046T01_9000000372_02490cztM0_level2_quad_clean.evt
Size (bytes)302,904,00099,970,560
Size288.9 MB 95.3 MB
Events in quadrant A2,660,146670,882
Events in quadrant B2,760,051687,166
Events in quadrant C2,590,878653,420
Events in quadrant D2,742,734604,576

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120482
B0121641
C0120021
D0125551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5879951.615921%
B58791041.769008%
C5879540.918524%
D5879681.156659%

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 7059 5880 1 1 0.01% 0.02%
B 7059 5880 4 4 0.06% 0.07%
C 7059 5880 0 0 0.00% 0.00%
D 7059 5880 8 8 0.11% 0.14%

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 14 235 14920 101.99 686 671 139.7
A 12 194 7889 51.67 686 671 139.7
A 0 226 7508 48.94 686 671 139.7
B 4 200 57838 437.41 690 673 130.7
B 15 85 25382 189.07 690 673 130.7
B 15 186 9421 66.94 690 673 130.7
C 10 65 10666 65.83 657 660 152.0
C 13 61 5843 34.1 657 660 152.0
C 12 4 3916 21.42 657 660 152.0
D 7 67 110298 707.58 655 639 155.0
D 2 184 58555 373.7 655 639 155.0
D 13 53 49645 316.21 655 639 155.0

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