ASTROSAT CZTI

Data Quality Report

Orbit 51263

Creation date: 2025-03-21T12:01:07.317769
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/AS1C07_001T01_9000006454_51263cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51263cztM0_level2_quad_clean.evt
Size (bytes)673,358,40090,843,840
Size642.2 MB 86.6 MB
Events in quadrant A6,436,694613,140
Events in quadrant B4,240,022683,714
Events in quadrant C9,823,604432,314
Events in quadrant D3,928,732573,617

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237037
B0171442
C0336502
D0163502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64142974.630496%
B64142543.960087%
C6414232436.233240%
D64141872.915497%

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 7609 6415 276 276 3.63% 4.30%
B 7609 6415 162 162 2.13% 2.53%
C 7609 6415 2240 2240 29.44% 34.92%
D 7609 6415 153 153 2.01% 2.39%

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 12 3 2367814 14156.76 672 656 167.2
A 12 80 570011 3405.02 672 656 167.2
A 12 194 268087 1599.37 672 656 167.2
B 5 185 715463 5000.22 677 654 143.0
B 8 128 177468 1236.85 677 654 143.0
B 1 255 98011 681.03 677 654 143.0
C 4 12 6434191 39967.8 579 574 161.0
C 15 248 514249 3191.12 579 574 161.0
C 13 3 140868 871.55 579 574 161.0
D 3 12 284622 1553.85 650 628 182.8
D 2 216 259605 1416.97 650 628 182.8
D 8 176 157731 859.57 650 628 182.8

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