ASTROSAT CZTI

Data Quality Report

Orbit 27497

Creation date: 2024-06-27T19:40:39.356446
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_249T01_9000003934_27497cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27497cztM0_level2_quad_clean.evt
Size (bytes)630,028,80093,323,520
Size600.8 MB 89.0 MB
Events in quadrant A3,582,813593,886
Events in quadrant B4,394,864596,334
Events in quadrant C3,609,591570,772
Events in quadrant D6,997,608555,513

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153060
B0177360
C0153650
D0258330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7322640.874078%
B73232653.618735%
C73231081.474805%
D732382411.252219%

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 9132 7322 0 0 0.00% 0.00%
B 9133 7323 105 105 1.15% 1.43%
C 9133 7323 0 0 0.00% 0.00%
D 9133 7323 651 651 7.13% 8.89%

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 13 254 12226 60.73 927 907 186.4
A 3 137 9005 43.45 927 907 186.4
A 0 226 7717 36.54 927 907 186.4
B 3 64 767143 4403.7 911 889 174.0
B 0 230 28780 160.29 911 889 174.0
B 12 111 21684 119.51 911 889 174.0
C 14 238 139974 666.43 885 891 208.7
C 10 22 10218 44.69 885 891 208.7
C 15 208 9060 39.14 885 891 208.7
D 1 52 3369307 16124.09 868 844 208.9
D 7 80 121302 576.61 868 844 208.9
D 2 250 98873 469.24 868 844 208.9

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