ASTROSAT CZTI

Data Quality Report

Orbit 21909

Creation date: 2024-06-27T18:33:49.240621
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/AS1A07_100T03_9000003242_21909cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21909cztM0_level2_quad_clean.evt
Size (bytes)108,005,76029,476,800
Size103.0 MB 28.1 MB
Events in quadrant A827,500198,570
Events in quadrant B856,620201,074
Events in quadrant C756,138192,303
Events in quadrant D726,703189,944

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032951
B033851
C031221
D030711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1487140.941493%
B1487271.815736%
C1487181.210491%
D148720.134499%

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 1487 1487 9 9 0.61% 0.61%
B 1487 1487 20 20 1.34% 1.34%
C 1487 1487 0 0 0.00% 0.00%
D 1487 1487 1 1 0.07% 0.07%

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 4 2 73899 1807.97 194 191 40.8
A 13 254 2577 58.53 194 191 40.8
A 0 226 1736 37.9 194 191 40.8
B 3 64 102564 2690.46 189 185 38.1
B 0 197 8779 225.85 189 185 38.1
B 12 111 4441 111.85 189 185 38.1
C 14 238 29660 678.11 180 180 43.5
C 10 22 20755 473.27 180 180 43.5
C 0 10 3103 67.24 180 180 43.5
D 1 52 8295 176.11 184 178 46.1
D 2 136 5945 125.13 184 178 46.1
D 2 234 5593 117.49 184 178 46.1

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