ASTROSAT CZTI

Data Quality Report

Orbit 45028

Creation date: 2024-06-27T23:09:10.252884
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/AS1A13_020T01_9000006040_45028cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45028cztM0_level2_quad_clean.evt
Size (bytes)617,938,56098,193,600
Size589.3 MB 93.6 MB
Events in quadrant A5,297,923681,944
Events in quadrant B4,071,288694,780
Events in quadrant C3,186,156691,458
Events in quadrant D9,817,079453,763

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204711
B0165631
C0142181
D0337131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64682483.834261%
B64683204.947434%
C64681342.071738%
D6468214833.209647%

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 6988 6470 3 3 0.04% 0.05%
B 6988 6470 111 111 1.59% 1.72%
C 6988 6470 44 44 0.63% 0.68%
D 6988 6470 1805 1805 25.83% 27.90%

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 10 83 2356179 15325.51 739 723 153.7
A 0 243 42921 274.56 739 723 153.7
A 13 248 28540 180.99 739 723 153.7
B 5 255 341604 2333.67 736 714 146.1
B 4 171 281730 1923.78 736 714 146.1
B 0 189 217124 1481.5 736 714 146.1
C 14 254 215793 1250.53 727 730 172.0
C 12 2 73284 421.88 727 730 172.0
C 15 208 28635 162.26 727 730 172.0
D 13 174 2389847 14502.68 642 621 164.7
D 1 52 1517968 9210.35 642 621 164.7
D 13 187 961212 5830.82 642 621 164.7

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