ASTROSAT CZTI

Data Quality Report

Orbit 07457

Creation date: 2024-06-27T15:20:00.915768
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/AS1A02_108T01_9000001024_07457cztM0_level2.evt modeM0/AS1A02_108T01_9000001024_07457cztM0_level2_quad_clean.evt
Size (bytes)836,043,84089,818,560
Size797.3 MB 85.7 MB
Events in quadrant A14,655,426422,572
Events in quadrant B3,321,853622,640
Events in quadrant C3,177,874604,389
Events in quadrant D3,688,248578,240

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0484073
B0147362
C0144562
D0158222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7044421459.823964%
B7044590.837592%
C7044190.269733%
D7044480.681431%

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 7664 7044 3855 3855 50.30% 54.73%
B 7664 7045 2 2 0.03% 0.03%
C 7664 7045 2 2 0.03% 0.03%
D 7664 7045 28 28 0.37% 0.40%

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 12201571 93715.12 635 621 130.2
A 0 226 5725 39.2 635 621 130.2
A 12 194 5497 37.45 635 621 130.2
B 0 214 49413 303.61 837 816 160.1
B 12 111 16825 100.02 837 816 160.1
B 11 111 13220 77.49 837 816 160.1
C 1 16 35470 186.41 802 808 185.9
C 9 68 6421 30.19 802 808 185.9
C 13 61 6323 29.66 802 808 185.9
D 1 52 206481 1049.23 794 771 196.1
D 12 221 166241 843.98 794 771 196.1
D 8 195 103437 523.65 794 771 196.1

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