ASTROSAT CZTI

Data Quality Report

Orbit 27910

Creation date: 2024-06-27T19:45:52.888560
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/AS1A10_048T06_9000004030_27910cztM0_level2.evt modeM0/AS1A10_048T06_9000004030_27910cztM0_level2_quad_clean.evt
Size (bytes)593,706,24089,481,600
Size566.2 MB 85.3 MB
Events in quadrant A3,460,344597,382
Events in quadrant B3,655,337602,448
Events in quadrant C3,150,789567,726
Events in quadrant D7,273,688488,305

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144580
B0150800
C0135890
D0263170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6499781.200185%
B65001302.000000%
C6499691.061702%
D6499103315.894753%

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 7384 6500 63 63 0.85% 0.97%
B 7385 6501 12 12 0.16% 0.18%
C 7384 6500 0 0 0.00% 0.00%
D 7384 6500 935 935 12.66% 14.38%

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 6 16 346203 2119.18 805 789 163.0
A 13 254 11800 67.55 805 789 163.0
A 3 137 7569 41.6 805 789 163.0
B 10 245 436937 2859.3 800 781 152.5
B 0 230 46862 302.09 800 781 152.5
B 12 111 18740 117.73 800 781 152.5
C 14 238 123572 688.01 760 767 178.5
C 3 233 43388 238.78 760 767 178.5
C 15 208 16823 89.95 760 767 178.5
D 1 52 3136026 18460.63 710 692 169.8
D 8 195 1014471 5969.06 710 692 169.8
D 7 69 245282 1440.13 710 692 169.8

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