ASTROSAT CZTI

Data Quality Report

Orbit 13695

Creation date: 2024-06-27T16:44:40.034429
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/AS1G08_070T01_9000002028_13695cztM0_level2.evt modeM0/AS1G08_070T01_9000002028_13695cztM0_level2_quad_clean.evt
Size (bytes)501,612,48083,119,680
Size478.4 MB 79.3 MB
Events in quadrant A3,226,356523,339
Events in quadrant B3,493,177558,709
Events in quadrant C3,214,334503,201
Events in quadrant D4,809,680471,650

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136322
B0142981
C0135351
D0184991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65971291.955434%
B65971702.576929%
C65971091.652266%
D65974647.033500%

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 7368 6599 0 0 0.00% 0.00%
B 7368 6599 19 19 0.26% 0.29%
C 7368 6599 0 0 0.00% 0.00%
D 7368 6599 303 303 4.11% 4.59%

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 1 162 29074 168.62 826 807 167.6
A 1 178 10957 60.55 826 807 167.6
A 1 161 9916 54.34 826 807 167.6
B 0 219 100075 631.0 828 810 157.3
B 4 142 51077 319.53 828 810 157.3
B 8 250 40775 254.05 828 810 157.3
C 3 233 105629 571.94 796 800 183.3
C 13 61 5850 27.55 796 800 183.3
C 14 234 5482 25.54 796 800 183.3
D 13 122 1496546 7958.21 776 754 188.0
D 8 195 145811 771.76 776 754 188.0
D 5 222 96509 509.45 776 754 188.0

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