ASTROSAT CZTI

Data Quality Report

Orbit 26993

Creation date: 2024-06-27T19:35:21.511306
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/AS1A09_145T01_9000003900_26993cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_26993cztM0_level2_quad_clean.evt
Size (bytes)659,266,56092,246,400
Size628.7 MB 88.0 MB
Events in quadrant A6,054,885567,092
Events in quadrant B3,453,427620,656
Events in quadrant C3,507,042598,738
Events in quadrant D6,517,118559,277

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223880
B0143180
C0145110
D0238120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A641678312.203865%
B6416651.013092%
C64161181.839152%
D641680512.546758%

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 7576 6416 541 541 7.14% 8.43%
B 7576 6416 1 1 0.01% 0.02%
C 7576 6416 0 0 0.00% 0.00%
D 7576 6416 692 692 9.13% 10.79%

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 14 235 2193040 13107.0 837 823 167.3
A 6 16 547763 3270.09 837 823 167.3
A 13 170 40301 236.03 837 823 167.3
B 12 111 19299 111.61 878 859 165.2
B 11 111 17094 98.26 878 859 165.2
B 14 111 15381 87.9 878 859 165.2
C 14 238 139435 691.43 859 868 200.4
C 15 208 19607 93.51 859 868 200.4
C 13 61 5735 24.29 859 868 200.4
D 1 52 2544811 12172.35 819 804 209.0
D 5 222 662285 3165.0 819 804 209.0
D 2 250 77679 367.83 819 804 209.0

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