ASTROSAT CZTI

Data Quality Report

Orbit 39814

Creation date: 2024-06-27T22:09:16.042093
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/AS1A12_022T01_9000005498_39814cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39814cztM0_level2_quad_clean.evt
Size (bytes)636,007,68080,023,680
Size606.5 MB 76.3 MB
Events in quadrant A3,173,486649,713
Events in quadrant B3,611,856644,021
Events in quadrant C13,371,247137,793
Events in quadrant D2,927,052579,078

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132923
B0148612
C0437662
D0131172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5900370.627119%
B59001983.355932%
C5900484882.169492%
D59001071.813559%

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 7183 5901 29 29 0.40% 0.49%
B 7183 5901 125 125 1.74% 2.12%
C 7183 5901 4231 4231 58.90% 71.70%
D 7183 5901 73 73 1.02% 1.24%

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 493521 3790.61 638 624 130.0
A 13 248 174112 1334.2 638 624 130.0
A 13 6 9626 69.23 638 624 130.0
B 4 171 561582 4586.56 628 610 122.3
B 0 229 297815 2429.98 628 610 122.3
B 5 32 134145 1091.8 628 610 122.3
C 9 187 10935677 127101.73 364 365 86.0
C 15 208 801096 9306.94 364 365 86.0
C 15 214 149958 1738.73 364 365 86.0
D 13 249 230016 1500.53 618 600 152.9
D 2 249 148353 966.4 618 600 152.9
D 2 153 55091 356.41 618 600 152.9

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