ASTROSAT CZTI

Data Quality Report

Orbit 37496

Creation date: 2024-06-27T21:40:48.157099
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_030T02_9000005328_37496cztM0_level2.evt modeM0/AS1A11_030T02_9000005328_37496cztM0_level2_quad_clean.evt
Size (bytes)11,511,3603,461,760
Size11.0 MB 3.3 MB
Events in quadrant A87,09721,812
Events in quadrant B75,84021,804
Events in quadrant C92,65920,744
Events in quadrant D77,38019,242

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083
B096
C01110
D0107

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023231957
B021111754
C025472164
D024842134

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02017
B01913
C02118
D02117

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18100.000000%
B17800.000000%
C17600.000000%
D16810.595238%

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 1080 297 0 0 0.00% 0.00%
B 990 301 0 0 0.00% 0.00%
C 951 286 0 0 0.00% 0.00%
D 961 269 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 10 83 8677 1437.54 19 19 6.0
A 9 143 436 69.24 19 19 6.0
A 15 222 401 63.43 19 19 6.0
B 12 111 476 81.12 19 18 5.6
B 11 111 436 74.04 19 18 5.6
B 14 111 397 67.13 19 18 5.6
C 14 254 9904 1557.0 18 18 6.3
C 15 214 7580 1190.98 18 18 6.3
C 14 128 760 116.86 18 18 6.3
D 13 249 4025 643.68 17 16 6.2
D 2 249 2666 425.48 17 16 6.2
D 7 38 1528 242.76 17 16 6.2

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