ASTROSAT CZTI

Data Quality Report

Orbit 33751

Creation date: 2024-06-27T20:52:14.968589
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/AS1A11_086T01_9000004820_33751cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33751cztM0_level2_quad_clean.evt
Size (bytes)535,680,00061,672,320
Size510.9 MB 58.8 MB
Events in quadrant A3,815,203373,203
Events in quadrant B4,015,850379,654
Events in quadrant C3,462,816380,844
Events in quadrant D4,561,520353,043

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147492
B0153331
C0133171
D0170901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54422424.446895%
B54423596.596839%
C54422474.538773%
D54422274.171261%

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 7054 5443 209 209 2.96% 3.84%
B 7054 5443 299 299 4.24% 5.49%
C 7054 5443 229 229 3.25% 4.21%
D 7054 5443 222 222 3.15% 4.08%

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 14 4 1204008 9319.09 641 629 129.1
A 15 169 80405 617.79 641 629 129.1
A 13 6 27342 206.87 641 629 129.1
B 5 172 1209789 9977.94 628 611 121.2
B 5 255 88706 726.94 628 611 121.2
B 15 222 51674 421.36 628 611 121.2
C 9 187 628388 4360.18 619 623 144.0
C 15 214 238665 1653.34 619 623 144.0
C 0 10 96170 663.63 619 623 144.0
D 8 195 1048261 6298.27 619 605 166.3
D 1 47 508141 3051.19 619 605 166.3
D 2 249 116773 698.38 619 605 166.3

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