ASTROSAT CZTI

Data Quality Report

Orbit 28852

Creation date: 2024-06-27T19:57:12.366797
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_103T08_9000004136_28852cztM0_level2.evt modeM0/AS1A10_103T08_9000004136_28852cztM0_level2_quad_clean.evt
Size (bytes)871,908,480118,883,520
Size831.5 MB 113.4 MB
Events in quadrant A3,136,623863,654
Events in quadrant B3,419,639873,921
Events in quadrant C4,456,406833,982
Events in quadrant D14,945,584564,931

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136491
B0144041
C0176751
D0488431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66151842.781557%
B66162483.748489%
C66162914.398428%
D6616571286.336155%

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 7035 6615 0 0 0.00% 0.00%
B 7036 6616 39 39 0.55% 0.59%
C 7036 6616 3 3 0.04% 0.05%
D 7035 6615 5537 5537 78.71% 83.70%

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 14 235 38997 236.48 796 777 161.6
A 1 113 26708 160.44 796 777 161.6
A 13 254 12585 73.06 796 777 161.6
B 5 172 190410 1273.13 789 768 149.0
B 5 255 69767 463.21 789 768 149.0
B 10 246 21166 136.94 789 768 149.0
C 3 233 1331342 7525.39 764 767 176.8
C 14 238 128844 724.37 764 767 176.8
C 14 254 8296 42.58 764 767 176.8
D 8 195 11661820 81749.77 596 580 142.6
D 1 52 901691 6317.13 596 580 142.6
D 7 69 37383 258.0 596 580 142.6

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