ASTROSAT CZTI

Data Quality Report

Orbit 48445

Creation date: 2024-09-12T10:55:37.275432
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_029T01_9000006426_48445cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48445cztM0_level2_quad_clean.evt
Size (bytes)475,620,480112,959,360
Size453.6 MB 107.7 MB
Events in quadrant A7,683,168719,120
Events in quadrant B3,075,390792,151
Events in quadrant C3,063,867748,256
Events in quadrant D3,251,256683,039

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277372
B0140622
C0141492
D0147312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68575317.743911%
B6857410.597929%
C6857430.627096%
D6857380.554178%

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 7962 6858 267 267 3.35% 3.89%
B 7962 6858 1 1 0.01% 0.01%
C 7962 6858 12 12 0.15% 0.17%
D 7962 6858 19 19 0.24% 0.28%

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 4205366 27027.2 745 728 155.6
A 13 248 585394 3758.2 745 728 155.6
A 13 254 13390 81.39 745 728 155.6
B 12 16 26369 169.48 765 741 151.2
B 12 111 19049 121.07 765 741 151.2
B 11 111 17696 112.13 765 741 151.2
C 12 2 64738 356.25 759 763 179.6
C 15 208 13400 70.37 759 763 179.6
C 14 254 11466 59.6 759 763 179.6
D 2 249 65396 341.63 754 729 189.3
D 4 222 56372 293.96 754 729 189.3
D 5 222 51389 267.63 754 729 189.3

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