ASTROSAT CZTI

Data Quality Report

Orbit 13517

Creation date: 2024-06-27T16:41:58.089441
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/AS1T02_020T01_9000001990_13517cztM0_level2.evt modeM0/AS1T02_020T01_9000001990_13517cztM0_level2_quad_clean.evt
Size (bytes)1,445,112,000258,125,760
Size1.3 GB 246.2 MB
Events in quadrant A9,891,7751,623,351
Events in quadrant B11,753,3781,729,834
Events in quadrant C10,178,4471,593,133
Events in quadrant D10,598,0361,501,132

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0415775
B0474954
C0419704
D0443424

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04060
B04060
C04060
D04060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198991940.974923%
B198992981.497563%
C198991430.718629%
D198992241.125685%

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 24130 19900 12 12 0.05% 0.06%
B 24130 19900 79 79 0.33% 0.40%
C 24130 19900 0 0 0.00% 0.00%
D 24130 19900 64 64 0.27% 0.32%

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 15 136219 264.13 2501 2448 506.5
A 1 162 69551 132.49 2501 2448 506.5
A 15 69 33845 61.99 2501 2448 506.5
B 3 64 1575787 3333.11 2513 2459 472.0
B 0 197 123597 256.63 2513 2459 472.0
B 4 142 104273 215.69 2513 2459 472.0
C 3 233 699188 1254.02 2426 2439 555.6
C 0 207 21741 34.74 2426 2439 555.6
C 13 61 17253 26.66 2426 2439 555.6
D 8 195 747816 1301.64 2416 2353 572.7
D 2 136 308808 535.09 2416 2353 572.7
D 13 104 170145 292.98 2416 2353 572.7

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