ASTROSAT CZTI

Data Quality Report

Orbit 14822

Creation date: 2024-06-27T17:00:07.171253
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_010T02_9000002188_14822cztM0_level2.evt modeM0/AS1G08_010T02_9000002188_14822cztM0_level2_quad_clean.evt
Size (bytes)463,547,520109,941,120
Size442.1 MB 104.8 MB
Events in quadrant A3,345,666749,557
Events in quadrant B3,595,273734,623
Events in quadrant C3,292,247718,500
Events in quadrant D3,395,142705,143

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136812
B0145691
C0135011
D0140651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6047881.455267%
B60471442.381346%
C6047741.223747%
D60471282.116752%

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 7373 6049 1 1 0.01% 0.02%
B 7373 6049 35 35 0.47% 0.58%
C 7373 6049 0 0 0.00% 0.00%
D 7373 6049 44 44 0.60% 0.73%

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 12 189 178302 1075.35 820 806 165.1
A 1 162 8035 43.8 820 806 165.1
A 0 226 7491 40.5 820 806 165.1
B 3 64 174495 1160.01 797 779 149.8
B 0 229 69551 459.23 797 779 149.8
B 0 228 59848 394.44 797 779 149.8
C 3 233 271280 1524.66 775 783 177.4
C 13 61 5538 26.8 775 783 177.4
C 3 202 1932 6.48 775 783 177.4
D 7 254 157450 758.54 784 768 206.6
D 10 70 126082 606.68 784 768 206.6
D 13 249 101266 486.54 784 768 206.6

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