ASTROSAT CZTI

Data Quality Report

Orbit 11270

Creation date: 2024-06-27T16:10:33.007925
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/AS1A04_044T01_9000001648_11270cztM0_level2.evt modeM0/AS1A04_044T01_9000001648_11270cztM0_level2_quad_clean.evt
Size (bytes)2,026,123,200242,766,720
Size1.9 GB 231.5 MB
Events in quadrant A17,160,1351,468,201
Events in quadrant B14,053,6391,548,003
Events in quadrant C9,825,6991,488,806
Events in quadrant D18,851,9481,343,102

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04460
B04460
C04460
D04460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0657505
B0561914
C0445264
D0708034

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2183515347.025418%
B2183511955.472865%
C218351710.783146%
D2183519108.747424%

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 24755 21838 825 825 3.33% 3.78%
B 24755 21838 565 565 2.28% 2.59%
C 24755 21838 0 0 0.00% 0.00%
D 24755 21836 1385 1385 5.59% 6.34%

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 8 5 3187929 6216.1 2517 2458 512.5
A 13 251 1767223 3443.74 2517 2458 512.5
A 14 238 1261794 2457.45 2517 2458 512.5
B 4 239 2454097 5013.94 2558 2496 489.0
B 3 64 1037817 2117.41 2558 2496 489.0
B 11 51 206083 416.37 2558 2496 489.0
C 13 61 18544 27.34 2516 2530 585.8
C 9 204 9841 12.48 2516 2530 585.8
C 14 234 7060 7.73 2516 2530 585.8
D 1 52 2741828 4684.9 2409 2336 584.7
D 10 253 2639151 4509.31 2409 2336 584.7
D 12 157 1125501 1920.76 2409 2336 584.7

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