ASTROSAT CZTI

Data Quality Report

Orbit 46518

Creation date: 2024-06-27T23:24:08.268800
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_068T07_9000006222_46518cztM0_level2.fits modeM0/AS1A13_068T07_9000006222_46518cztM0_level2_quad_clean.evt
Size (bytes)548,375,040107,835,840
Size523.0 MB 102.8 MB
Events in quadrant A6,256,353736,800
Events in quadrant B3,728,523772,803
Events in quadrant C5,289,515664,506
Events in quadrant D4,536,601651,067

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023245203
B01517399
C020103278
D017900164

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62912243.560642%
B63021923.046652%
C629184913.495470%
D63033295.219737%

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 7560 6305 24 24 0.32% 0.38%
B 7560 6316 57 57 0.75% 0.90%
C 7561 6306 677 677 8.95% 10.74%
D 7561 6313 262 262 3.47% 4.15%

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 3241978 20996.74 754 739 154.4
A 9 191 43196 275.04 754 739 154.4
A 0 243 19430 121.08 754 739 154.4
B 15 201 191728 1291.41 755 733 147.9
B 3 112 182441 1228.61 755 733 147.9
B 8 234 102788 690.04 755 733 147.9
C 9 54 2218505 13475.09 701 705 164.6
C 14 254 289073 1752.09 701 705 164.6
C 1 3 15948 92.61 701 705 164.6
D 1 52 646328 3480.99 730 704 185.5
D 13 168 557536 3002.25 730 704 185.5
D 5 33 202139 1086.07 730 704 185.5

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