ASTROSAT CZTI

Data Quality Report

Orbit 11342

Creation date: 2024-06-27T16:11:34.229344
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_062T01_9000001660_11342cztM0_level2.evt modeM0/AS1G08_062T01_9000001660_11342cztM0_level2_quad_clean.evt
Size (bytes)584,196,48081,973,440
Size557.1 MB 78.2 MB
Events in quadrant A3,946,242544,630
Events in quadrant B4,352,661527,842
Events in quadrant C2,608,951545,512
Events in quadrant D6,381,889448,737

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156812
B0168321
C0120091
D0229841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59361372.307951%
B59365038.473720%
C5936370.623315%
D5936130922.051887%

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 6866 5937 48 48 0.70% 0.81%
B 6866 5937 323 323 4.70% 5.44%
C 6866 5937 0 0 0.00% 0.00%
D 6866 5937 1015 1015 14.78% 17.10%

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 13 251 1194717 8431.62 687 672 141.6
A 13 210 36828 255.31 687 672 141.6
A 1 162 23166 158.84 687 672 141.6
B 4 239 1484744 11320.18 669 651 131.1
B 3 64 107545 815.35 669 651 131.1
B 4 81 47708 358.94 669 651 131.1
C 13 61 5005 27.87 668 670 155.5
C 13 250 2104 9.22 668 670 155.5
C 14 234 1998 8.54 668 670 155.5
D 1 52 1509376 10785.58 582 565 139.9
D 13 152 926239 6617.09 582 565 139.9
D 10 253 897712 6413.17 582 565 139.9

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