ASTROSAT CZTI

Data Quality Report

Orbit 10869

Creation date: 2024-06-27T16:04:56.253195
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/AS1A03_118T01_9000001570_10869cztM0_level2.evt modeM0/AS1A03_118T01_9000001570_10869cztM0_level2_quad_clean.evt
Size (bytes)651,597,120107,562,240
Size621.4 MB 102.6 MB
Events in quadrant A4,932,071711,789
Events in quadrant B4,484,362724,109
Events in quadrant C3,074,175728,352
Events in quadrant D6,806,137642,719

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191202
B0176011
C0134461
D0244871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64524466.912585%
B64523405.269684%
C6452661.022939%
D6452151823.527588%

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 7672 6452 250 250 3.26% 3.87%
B 7672 6452 164 164 2.14% 2.54%
C 7672 6452 1 1 0.01% 0.02%
D 7672 6452 1340 1340 17.47% 20.77%

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 8 5 1769828 10979.13 800 783 161.1
A 0 254 27879 168.16 800 783 161.1
A 15 223 11971 69.44 800 783 161.1
B 4 239 1202760 7903.42 801 785 152.1
B 0 245 50833 329.08 801 785 152.1
B 15 204 35104 225.66 801 785 152.1
C 14 234 12855 67.06 783 786 180.0
C 13 61 5776 27.72 783 786 180.0
C 8 208 2778 11.07 783 786 180.0
D 1 52 3502837 21367.09 685 666 163.9
D 10 199 338538 2061.39 685 666 163.9
D 6 219 97507 590.84 685 666 163.9

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