ASTROSAT CZTI

Data Quality Report

Orbit 27144

Creation date: 2024-06-27T19:36:59.073388
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_244T01_9000003912_27144cztM0_level2.evt modeM0/AS1T03_244T01_9000003912_27144cztM0_level2_quad_clean.evt
Size (bytes)514,388,16099,725,760
Size490.6 MB 95.1 MB
Events in quadrant A3,462,380638,646
Events in quadrant B3,632,509649,147
Events in quadrant C3,523,218621,523
Events in quadrant D4,465,652603,599

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150480
B0153970
C0150960
D0184330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7290370.507545%
B7290540.740741%
C7290610.836763%
D72901722.359396%

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 7710 7292 3 3 0.04% 0.04%
B 7710 7292 1 1 0.01% 0.01%
C 7710 7292 1 1 0.01% 0.01%
D 7710 7292 113 113 1.47% 1.55%

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 27353 148.5 883 862 178.4
A 13 254 13156 68.91 883 862 178.4
A 8 192 11969 62.26 883 862 178.4
B 3 112 51060 296.35 883 859 169.4
B 3 64 47130 273.15 883 859 169.4
B 15 33 24862 141.7 883 859 169.4
C 14 238 136140 667.65 856 862 202.6
C 15 208 26442 126.25 856 862 202.6
C 2 16 12684 58.35 856 862 202.6
D 7 38 314774 1441.1 851 831 217.8
D 12 233 309528 1417.02 851 831 217.8
D 1 52 285151 1305.12 851 831 217.8

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