ASTROSAT CZTI

Data Quality Report

Orbit 06913

Creation date: 2024-06-27T15:13:01.887558
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/AS1A02_005T01_9000000948_06913cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06913cztM0_level2_quad_clean.evt
Size (bytes)1,584,112,320305,547,840
Size1.5 GB 291.4 MB
Events in quadrant A11,134,3311,895,673
Events in quadrant B11,794,1511,923,822
Events in quadrant C11,092,6071,908,279
Events in quadrant D12,289,1311,833,113

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05040
B05040
C05040
D05040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0506227
B0518756
C0506246
D0541916

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A246102430.987403%
B246103421.389679%
C246102050.832995%
D246102911.182446%

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 27285 24616 10 10 0.04% 0.04%
B 27285 24616 20 20 0.07% 0.08%
C 27285 24616 2 2 0.01% 0.01%
D 27285 24616 126 126 0.46% 0.51%

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 13 248 60841 100.2 2845 2783 579.4
A 0 23 36046 57.41 2845 2783 579.4
A 13 14 35562 56.57 2845 2783 579.4
B 4 173 169404 306.04 2868 2803 544.4
B 4 80 149340 269.18 2868 2803 544.4
B 0 228 94822 169.04 2868 2803 544.4
C 9 247 189423 293.19 2762 2770 636.6
C 8 128 27687 39.14 2762 2770 636.6
C 9 16 26888 37.88 2762 2770 636.6
D 1 20 460454 677.1 2763 2676 676.1
D 2 216 403648 593.08 2763 2676 676.1
D 2 136 341363 500.95 2763 2676 676.1

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