ASTROSAT CZTI

Data Quality Report

Orbit 26581

Creation date: 2024-06-27T19:30:42.666679
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/AS1A09_095T02_9000003846_26581cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26581cztM0_level2_quad_clean.evt
Size (bytes)705,479,040120,625,920
Size672.8 MB 115.0 MB
Events in quadrant A3,665,355808,115
Events in quadrant B4,515,682809,984
Events in quadrant C4,506,031775,617
Events in quadrant D8,147,760714,343

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161020
B0187280
C0182700
D0296970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78321001.276813%
B78331812.310737%
C78323023.855975%
D7832157120.058733%

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 8437 7834 0 0 0.00% 0.00%
B 8438 7835 12 12 0.14% 0.15%
C 8437 7833 94 94 1.11% 1.20%
D 8437 7834 1257 1257 14.90% 16.05%

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 0 13 20853 105.52 940 918 188.9
A 13 254 12698 62.35 940 918 188.9
A 3 137 8939 42.45 940 918 188.9
B 0 189 670482 3787.45 936 911 176.8
B 5 172 59868 333.49 936 911 176.8
B 3 112 53645 298.29 936 911 176.8
C 4 254 571665 2711.55 896 902 210.5
C 3 233 169758 802.19 896 902 210.5
C 14 238 143985 679.75 896 902 210.5
D 7 80 2761800 13257.34 856 828 208.3
D 1 52 1424076 6834.0 856 828 208.3
D 2 250 536590 2572.56 856 828 208.3

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