ASTROSAT CZTI

Data Quality Report

Orbit 47460

Creation date: 2024-07-08T00:11:35.713797
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_089T01_9000006330_47460cztM0_level2.fits modeM0/AS1A13_089T01_9000006330_47460cztM0_level2_quad_clean.evt
Size (bytes)556,764,480109,368,000
Size531.0 MB 104.3 MB
Events in quadrant A7,244,972720,650
Events in quadrant B3,370,916777,259
Events in quadrant C3,011,806738,856
Events in quadrant D6,488,262629,580

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257592
B0143702
C0133852
D0237702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63783936.161806%
B6379711.113027%
C6379530.830851%
D63795288.277159%

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 7593 6379 126 126 1.66% 1.98%
B 7594 6380 9 9 0.12% 0.14%
C 7594 6380 24 24 0.32% 0.38%
D 7594 6380 516 516 6.79% 8.09%

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 3971149 26071.4 738 724 152.3
A 9 191 312379 2046.45 738 724 152.3
A 14 235 47569 307.6 738 724 152.3
B 0 198 100281 690.41 749 728 144.2
B 0 190 71581 491.37 749 728 144.2
B 0 200 65707 450.64 749 728 144.2
C 12 2 97668 555.6 741 745 174.4
C 3 233 19264 106.16 741 745 174.4
C 13 61 5039 24.61 741 745 174.4
D 6 112 2439972 13652.64 719 697 178.7
D 2 165 540924 3023.65 719 697 178.7
D 12 128 216782 1209.43 719 697 178.7

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