ASTROSAT CZTI

Data Quality Report

Orbit 35836

Creation date: 2022-06-08T16:33:52.373301
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/AS1A11_080T01_9000005146_35836cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35836cztM0_level2_quad_clean.evt
Size (bytes)472,677,12081,682,560
Size450.8 MB 77.9 MB
Events in quadrant A3,592,295528,247
Events in quadrant B3,152,538534,177
Events in quadrant C3,349,640517,631
Events in quadrant D3,834,761495,727

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142623
B0129582
C0133732
D0151452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56771983.487758%
B5677571.004051%
C56771552.730315%
D56772484.368504%

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 7320 5678 178 178 2.43% 3.13%
B 7320 5678 25 25 0.34% 0.44%
C 7320 5678 133 133 1.82% 2.34%
D 7320 5678 230 230 3.14% 4.05%

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 15 169 821048 6030.58 668 655 136.0
A 10 83 164838 1206.88 668 655 136.0
A 13 6 12529 87.28 668 655 136.0
B 5 255 305184 2361.98 667 652 128.9
B 4 232 79523 611.73 667 652 128.9
B 5 172 59746 458.34 667 652 128.9
C 15 208 349717 2332.06 643 649 149.7
C 0 10 240308 1601.12 643 649 149.7
C 15 214 238437 1588.62 643 649 149.7
D 13 249 351912 2237.37 642 629 157.0
D 2 250 304003 1932.23 642 629 157.0
D 7 223 250835 1593.6 642 629 157.0

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