ASTROSAT CZTI

Data Quality Report

Orbit 22401

Creation date: 2024-06-27T18:40:21.052944
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/AS1A07_007T04_9000003310_22401cztM0_level2.evt modeM0/AS1A07_007T04_9000003310_22401cztM0_level2_quad_clean.evt
Size (bytes)435,343,680101,615,040
Size415.2 MB 96.9 MB
Events in quadrant A3,058,523668,424
Events in quadrant B3,155,319673,648
Events in quadrant C3,076,581644,378
Events in quadrant D3,447,572633,216

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134182
B0136161
C0133641
D0143991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6562530.807681%
B6563661.005638%
C6563721.097059%
D6563590.898979%

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 7432 6562 0 0 0.00% 0.00%
B 7433 6563 7 7 0.09% 0.11%
C 7433 6563 0 0 0.00% 0.00%
D 7433 6563 6 6 0.08% 0.09%

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 13 254 9824 56.91 792 775 159.0
A 3 137 6907 38.57 792 775 159.0
A 0 226 6750 37.58 792 775 159.0
B 3 64 31767 207.14 784 763 149.7
B 12 111 18173 116.32 784 763 149.7
B 11 111 16038 102.05 784 763 149.7
C 14 238 118907 664.1 759 764 177.9
C 13 61 5151 24.66 759 764 177.9
C 15 78 1792 5.78 759 764 177.9
D 1 52 196111 1037.69 771 750 188.3
D 12 227 193611 1024.41 771 750 188.3
D 13 104 40409 210.65 771 750 188.3

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