ASTROSAT CZTI

Data Quality Report

Orbit 25780

Creation date: 2024-06-27T19:21:22.562613
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_147T01_9000003754_25780cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25780cztM0_level2_quad_clean.evt
Size (bytes)552,248,640106,836,480
Size526.7 MB 101.9 MB
Events in quadrant A3,508,895729,837
Events in quadrant B3,287,029753,526
Events in quadrant C3,286,733707,258
Events in quadrant D6,234,478624,443

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142040
B0134920
C0133820
D0225870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60201382.292359%
B6020751.245847%
C6020981.627907%
D601987014.454228%

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 7425 6020 64 64 0.86% 1.06%
B 7425 6020 2 2 0.03% 0.03%
C 7425 6020 0 0 0.00% 0.00%
D 7424 6019 784 784 10.56% 13.03%

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 281423 1712.16 827 812 163.9
A 6 16 30431 180.72 827 812 163.9
A 13 254 9000 49.96 827 812 163.9
B 12 111 17526 108.92 836 819 153.4
B 11 111 15645 96.66 836 819 153.4
B 14 111 14189 87.16 836 819 153.4
C 14 238 131466 710.45 800 807 183.9
C 3 233 34953 185.67 800 807 183.9
C 13 61 5432 25.15 800 807 183.9
D 7 80 1460991 8303.1 750 734 175.9
D 1 52 1070081 6080.36 750 734 175.9
D 8 195 682919 3878.94 750 734 175.9

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