ASTROSAT CZTI

Data Quality Report

Orbit 09431

Creation date: 2024-06-27T15:45:52.095444
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/AS1A02_178T01_9000001340_09431cztM0_level2.evt modeM0/AS1A02_178T01_9000001340_09431cztM0_level2_quad_clean.evt
Size (bytes)426,006,72088,416,000
Size406.3 MB 84.3 MB
Events in quadrant A3,301,274558,693
Events in quadrant B3,038,438562,451
Events in quadrant C2,927,883557,218
Events in quadrant D3,190,333545,138

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021975
B021487
C021991
D021789

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227118991
B0217798568
C0217768537
D0226369164

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0162
C0163
D0163

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6475530.818533%
B6492510.785582%
C6523360.551893%
D6470360.556414%

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 12173 7466 4 4 0.03% 0.05%
B 12189 7518 0 0 0.00% 0.00%
C 12205 7582 1 1 0.01% 0.01%
D 12201 7539 0 0 0.00% 0.00%

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 8 5 293602 1869.09 764 745 156.7
A 4 2 23176 143.16 764 745 156.7
A 1 162 21037 129.51 764 745 156.7
B 0 219 25880 170.24 765 745 147.6
B 12 111 16342 105.64 765 745 147.6
B 11 111 13329 85.23 765 745 147.6
C 9 68 16457 91.52 741 745 171.7
C 14 234 15989 88.8 741 745 171.7
C 13 61 5735 29.07 741 745 171.7
D 8 195 210165 1165.88 736 719 179.6
D 1 52 93982 519.15 736 719 179.6
D 7 71 35659 194.49 736 719 179.6

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