ASTROSAT CZTI

Data Quality Report

Orbit 13258

Creation date: 2024-06-27T16:38:28.095243
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/AS1G08_077T01_9000001970_13258cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13258cztM0_level2_quad_clean.evt
Size (bytes)484,470,720107,827,200
Size462.0 MB 102.8 MB
Events in quadrant A3,092,215717,410
Events in quadrant B5,041,214660,952
Events in quadrant C3,079,895754,878
Events in quadrant D3,047,311709,011

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132203
B0190472
C0131302
D0131402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6063621.022596%
B606391715.124526%
C6063530.874155%
D6063480.791687%

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 7419 6065 2 2 0.03% 0.03%
B 7419 6064 591 591 7.97% 9.75%
C 7419 6065 8 8 0.11% 0.13%
D 7419 6065 10 10 0.13% 0.16%

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 15 239 127037 836.85 759 745 150.9
A 1 162 23144 148.42 759 745 150.9
A 1 178 7792 46.7 759 745 150.9
B 4 239 2221356 17075.94 705 688 130.0
B 3 64 19589 145.34 705 688 130.0
B 0 214 16403 120.84 705 688 130.0
C 15 208 74484 422.62 768 772 174.4
C 3 233 8354 43.47 768 772 174.4
C 13 61 5611 27.74 768 772 174.4
D 1 52 101541 564.28 752 731 178.7
D 8 195 65275 361.28 752 731 178.7
D 2 234 22275 120.59 752 731 178.7

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