ASTROSAT CZTI

Data Quality Report

Orbit 30026

Creation date: 2024-06-27T20:10:03.494189
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/AS1A10_071T04_9000004316_30026cztM0_level2.evt modeM0/AS1A10_071T04_9000004316_30026cztM0_level2_quad_clean.evt
Size (bytes)382,417,92052,421,760
Size364.7 MB 50.0 MB
Events in quadrant A2,384,919324,166
Events in quadrant B3,631,449321,673
Events in quadrant C2,490,615307,636
Events in quadrant D2,760,243309,076

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099281
B0142461
C0102671
D0112741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46251894.086486%
B46253116.724324%
C46252685.794595%
D46251904.108108%

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 4720 4627 0 0 0.00% 0.00%
B 4720 4627 1 1 0.02% 0.02%
C 4720 4627 5 5 0.11% 0.11%
D 4720 4627 59 59 1.25% 1.28%

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 13 254 8782 64.47 616 603 126.9
A 3 137 6535 46.76 616 603 126.9
A 0 226 5246 36.6 616 603 126.9
B 6 159 1263730 10423.66 599 583 121.2
B 12 111 15326 121.66 599 583 121.2
B 11 111 14202 112.39 599 583 121.2
C 14 238 94313 673.26 584 587 139.2
C 3 233 53810 382.32 584 587 139.2
C 2 16 42779 303.08 584 587 139.2
D 7 80 378060 2623.19 596 582 143.9
D 8 195 114879 794.28 596 582 143.9
D 2 250 19407 130.82 596 582 143.9

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