ASTROSAT CZTI

Data Quality Report

Orbit 19500

Creation date: 2024-06-27T18:03:33.278540
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/AS1A05_175T01_9000002894_19500cztM0_level2.evt modeM0/AS1A05_175T01_9000002894_19500cztM0_level2_quad_clean.evt
Size (bytes)529,128,00093,320,640
Size504.6 MB 89.0 MB
Events in quadrant A3,487,967600,680
Events in quadrant B3,675,232600,750
Events in quadrant C4,201,140566,759
Events in quadrant D4,178,461563,853

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148702
B0153512
C0167793
D0170292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70952463.467230%
B70953054.298802%
C70943705.215675%
D70942874.045672%

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 8755 7095 0 0 0.00% 0.00%
B 8755 7095 20 20 0.23% 0.28%
C 8754 7094 39 39 0.45% 0.55%
D 8754 7094 53 53 0.61% 0.75%

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 11 47 11697 59.38 901 880 182.1
A 0 226 7848 38.25 901 880 182.1
A 13 254 7260 35.02 901 880 182.1
B 3 64 66500 387.04 887 864 169.6
B 0 182 50765 294.25 887 864 169.6
B 4 171 45949 265.85 887 864 169.6
C 7 247 305286 1537.71 852 857 198.0
C 5 112 217297 1093.27 852 857 198.0
C 3 233 152122 764.06 852 857 198.0
D 1 52 534578 2531.71 873 847 210.8
D 7 238 181304 855.98 873 847 210.8
D 2 16 137250 647.02 873 847 210.8

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