ASTROSAT CZTI

Data Quality Report

Orbit 27058

Creation date: 2024-06-27T19:36:01.057551
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/AS1A09_120T02_9000003904_27058cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27058cztM0_level2_quad_clean.evt
Size (bytes)667,624,32093,447,360
Size636.7 MB 89.1 MB
Events in quadrant A5,212,476567,575
Events in quadrant B7,378,269623,480
Events in quadrant C3,229,193603,657
Events in quadrant D3,957,798580,531

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196430
B0261700
C0136390
D0161950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A650970910.892610%
B6522206031.585403%
C65161882.885206%
D65272573.937490%

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 6663 6529 471 471 7.07% 7.21%
B 6664 6532 1777 1777 26.67% 27.20%
C 6664 6532 0 0 0.00% 0.00%
D 6664 6535 131 131 1.97% 2.00%

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 2158989 13601.15 789 773 158.7
A 13 254 10970 64.26 789 773 158.7
A 6 16 10306 60.07 789 773 158.7
B 0 189 4392520 30514.92 736 719 143.9
B 10 246 95113 655.86 736 719 143.9
B 12 111 17429 116.1 736 719 143.9
C 14 238 126100 667.71 792 799 187.7
C 3 9 10039 49.24 792 799 187.7
C 13 61 5455 24.81 792 799 187.7
D 1 52 728423 3776.13 798 777 192.7
D 2 250 185751 959.93 798 777 192.7
D 2 234 30623 154.89 798 777 192.7

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