ASTROSAT CZTI

Data Quality Report

Orbit 50795

Creation date: 2025-02-18T11:52:01.382074
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_9000006450_50795cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50795cztM0_level2_quad_clean.evt
Size (bytes)476,527,68085,043,520
Size454.5 MB 81.1 MB
Events in quadrant A3,240,067561,896
Events in quadrant B2,991,023609,835
Events in quadrant C6,613,256498,726
Events in quadrant D4,331,545487,174

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135451
B0131561
C0238801
D0170611

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59721282.143336%
B59721202.009377%
C597362910.530722%
D59733255.441152%

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 6942 5972 59 59 0.85% 0.99%
B 6942 5972 40 40 0.58% 0.67%
C 6943 5973 513 513 7.39% 8.59%
D 6943 5973 237 237 3.41% 3.97%

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 3 63 122480 765.87 635 619 159.1
A 4 3 116392 727.61 635 619 159.1
A 3 130 98719 616.54 635 619 159.1
B 10 247 113093 839.49 627 603 134.0
B 4 206 98547 730.93 627 603 134.0
B 0 171 59843 442.09 627 603 134.0
C 5 10 2140159 13186.87 590 585 162.3
C 0 193 732190 4509.11 590 585 162.3
C 2 207 587248 3615.79 590 585 162.3
D 2 216 533055 3191.44 600 582 166.8
D 2 249 213173 1274.19 600 582 166.8
D 15 169 190301 1137.1 600 582 166.8

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