ASTROSAT CZTI

Data Quality Report

Orbit 33987

Creation date: 2024-06-27T20:55:03.928297
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_046T07_9000004862_33987cztM0_level2.evt modeM0/AS1A11_046T07_9000004862_33987cztM0_level2_quad_clean.evt
Size (bytes)484,292,16070,473,600
Size461.9 MB 67.2 MB
Events in quadrant A3,470,226448,532
Events in quadrant B3,180,198459,365
Events in quadrant C3,215,323447,461
Events in quadrant D4,457,002422,180

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134583
B0124862
C0131712
D0166862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50831112.183750%
B5083681.337793%
C5083661.298446%
D5083831.632894%

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 7115 5084 79 79 1.11% 1.55%
B 7115 5084 37 37 0.52% 0.73%
C 7115 5084 51 51 0.72% 1.00%
D 7115 5084 63 63 0.89% 1.24%

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 812700 6039.15 679 669 134.5
A 10 83 15873 113.07 679 669 134.5
A 13 6 15650 111.42 679 669 134.5
B 5 172 174637 1375.52 668 654 126.5
B 0 190 120856 950.32 668 654 126.5
B 4 232 87809 689.05 668 654 126.5
C 15 214 220789 1469.87 658 666 149.8
C 0 10 210456 1400.87 658 666 149.8
C 3 233 156385 1039.81 658 666 149.8
D 8 195 1475741 9186.34 662 645 160.6
D 2 250 129259 800.96 662 645 160.6
D 12 6 65598 404.5 662 645 160.6

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