ASTROSAT CZTI

Data Quality Report

Orbit 25264

Creation date: 2024-06-27T19:15:41.773915
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_027T02_9000003696_25264cztM0_level2.evt modeM0/AS1A09_027T02_9000003696_25264cztM0_level2_quad_clean.evt
Size (bytes)876,712,320106,732,800
Size836.1 MB 101.8 MB
Events in quadrant A3,527,918734,962
Events in quadrant B6,140,764709,259
Events in quadrant C3,758,668712,770
Events in quadrant D12,604,990539,033

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158230
B0233770
C0162500
D0428610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7690400.520156%
B769079410.325098%
C76901031.339402%
D7690269034.980494%

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 8040 7691 0 0 0.00% 0.00%
B 8040 7691 498 498 6.19% 6.48%
C 8040 7691 1 1 0.01% 0.01%
D 8040 7691 2370 2370 29.48% 30.82%

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 3 1 36580 197.22 905 884 181.0
A 13 254 12461 63.96 905 884 181.0
A 3 137 8040 39.54 905 884 181.0
B 3 64 2562649 15504.78 867 843 165.2
B 0 219 73477 439.6 867 843 165.2
B 10 251 49785 296.21 867 843 165.2
C 14 238 137813 665.66 878 883 205.7
C 3 233 123430 595.74 878 883 205.7
C 0 207 26915 126.55 878 883 205.7
D 9 35 3944261 21605.85 752 730 182.5
D 1 239 2526141 13836.24 752 730 182.5
D 1 52 2396220 13124.43 752 730 182.5

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