ASTROSAT CZTI

Data Quality Report

Orbit 49835

Creation date: 2024-12-16T08:48:01.876594
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/AS1A13_037T01_9000006440_49835cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49835cztM0_level2_quad_clean.evt
Size (bytes)1,010,566,08057,738,240
Size963.8 MB 55.1 MB
Events in quadrant A7,402,646515,809
Events in quadrant B3,596,582613,552
Events in quadrant C11,521,49594,821
Events in quadrant D14,415,25492,846

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262520
B0148810
C0384000
D0469890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6089114218.755132%
B60891091.790113%
C6090601998.834154%
D60896089100.000000%

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 6979 6090 956 956 13.70% 15.70%
B 6979 6090 62 62 0.89% 1.02%
C 6979 6089 2460 2460 35.25% 40.40%
D 6978 6088 5341 5341 76.54% 87.73%

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 0 98 1187877 7840.5 595 580 151.4
A 4 4 897871 5925.4 595 580 151.4
A 15 191 399116 2631.8 595 580 151.4
B 10 28 296098 2150.32 641 620 137.4
B 0 229 175226 1270.68 641 620 137.4
B 10 44 130178 942.85 641 620 137.4
C 15 230 4655436 106485.04 125 122 43.7
C 15 197 1044205 23882.22 125 122 43.7
C 15 174 999914 22869.11 125 122 43.7
D 8 176 5791218 102643.49 131 123 56.4
D 7 61 1888642 33472.8 131 123 56.4
D 8 129 1784309 31623.57 131 123 56.4

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