ASTROSAT CZTI

Data Quality Report

Orbit 17938

Creation date: 2024-06-27T17:42:51.909021
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/AS1T03_025T01_9000002670_17938cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17938cztM0_level2_quad_clean.evt
Size (bytes)488,162,880116,213,760
Size465.5 MB 110.8 MB
Events in quadrant A3,463,945757,171
Events in quadrant B3,525,643777,098
Events in quadrant C3,414,422743,147
Events in quadrant D3,874,409724,571

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155372
B0157542
C0152692
D0168802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7436200.268962%
B7436530.712749%
C7436530.712749%
D74361231.654115%

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 7811 7437 0 0 0.00% 0.00%
B 7811 7437 3 3 0.04% 0.04%
C 7811 7437 0 0 0.00% 0.00%
D 7811 7437 69 69 0.88% 0.93%

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 15 174 147591 846.27 856 837 173.4
A 4 2 19884 109.84 856 837 173.4
A 0 226 7378 37.72 856 837 173.4
B 0 197 70348 424.7 864 839 163.7
B 0 190 35192 209.9 864 839 163.7
B 12 111 19802 115.86 864 839 163.7
C 14 238 128999 654.48 832 835 195.8
C 5 218 12670 60.44 832 835 195.8
C 3 233 10144 47.54 832 835 195.8
D 7 238 387640 1928.37 824 798 200.6
D 5 222 96441 476.77 824 798 200.6
D 10 70 73971 364.76 824 798 200.6

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