ASTROSAT CZTI

Data Quality Report

Orbit 24911

Creation date: 2024-06-27T19:11:21.105749
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/AS1A08_003T16_9000003650_24911cztM0_level2.evt modeM0/AS1A08_003T16_9000003650_24911cztM0_level2_quad_clean.evt
Size (bytes)461,914,56076,916,160
Size440.5 MB 73.4 MB
Events in quadrant A3,154,467490,999
Events in quadrant B3,253,674507,859
Events in quadrant C3,555,736464,032
Events in quadrant D3,619,304448,199

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127291
B0131241
C0141971
D0146261

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5981120.200635%
B5981400.668784%
C5981841.404447%
D5982440.735540%

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 7371 5982 0 0 0.00% 0.00%
B 7371 5982 0 0 0.00% 0.00%
C 7371 5982 1 1 0.01% 0.02%
D 7372 5983 22 22 0.30% 0.37%

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 13 254 9592 53.24 818 805 165.0
A 3 137 7036 37.75 818 805 165.0
A 0 226 6897 36.91 818 805 165.0
B 0 189 23816 151.09 818 799 152.3
B 12 111 18045 113.21 818 799 152.3
B 4 80 17598 110.27 818 799 152.3
C 7 247 389069 2186.18 773 779 177.6
C 14 238 128228 717.57 773 779 177.6
C 2 16 13549 71.9 773 779 177.6
D 1 52 356166 1923.8 772 752 184.7
D 2 244 190604 1027.64 772 752 184.7
D 8 195 125796 676.84 772 752 184.7

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