ASTROSAT CZTI

Data Quality Report

Orbit 15171

Creation date: 2024-06-27T17:04:42.053609
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/AS1A04_218T08_9000002236_15171cztM0_level2.evt modeM0/AS1A04_218T08_9000002236_15171cztM0_level2_quad_clean.evt
Size (bytes)407,664,00086,938,560
Size388.8 MB 82.9 MB
Events in quadrant A3,187,462552,696
Events in quadrant B3,080,983572,220
Events in quadrant C2,957,045577,136
Events in quadrant D2,742,732541,961

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131983
B0127423
C0121773
D0119763

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5555230.414041%
B5555981.764176%
C5555110.198020%
D5555120.216022%

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 6931 5558 0 0 0.00% 0.00%
B 6931 5558 43 43 0.62% 0.77%
C 6931 5558 0 0 0.00% 0.00%
D 6931 5558 4 4 0.06% 0.07%

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 15 239 284711 2080.32 680 668 136.5
A 0 253 195422 1426.37 680 668 136.5
A 12 189 71892 521.64 680 668 136.5
B 3 64 195398 1507.4 691 673 129.2
B 0 189 89626 688.6 691 673 129.2
B 4 80 44531 339.51 691 673 129.2
C 3 233 291288 1859.09 683 688 156.3
C 13 61 4881 26.82 683 688 156.3
C 9 236 2691 12.81 683 688 156.3
D 2 16 130934 807.68 669 649 161.3
D 12 222 23034 138.77 669 649 161.3
D 10 70 18888 113.07 669 649 161.3

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