ASTROSAT CZTI

Data Quality Report

Orbit 34745

Creation date: 2022-03-03T11:42:53.658561
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_048T04_9000004984_34745cztM0_level2.evt modeM0/AS1A10_048T04_9000004984_34745cztM0_level2_quad_clean.evt
Size (bytes)456,088,32062,778,240
Size435.0 MB 59.9 MB
Events in quadrant A2,741,166379,115
Events in quadrant B3,563,013382,815
Events in quadrant C2,978,856382,223
Events in quadrant D4,145,659360,996

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117323
B0141872
C0121072
D0161462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5658200.353482%
B56582724.807352%
C5658440.777660%
D56581833.234358%

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 7061 5659 12 12 0.17% 0.21%
B 7061 5659 195 195 2.76% 3.45%
C 7061 5659 23 23 0.33% 0.41%
D 7061 5659 141 141 2.00% 2.49%

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 15 223 57725 425.58 664 651 134.1
A 10 83 48953 360.17 664 651 134.1
A 9 143 34571 252.93 664 651 134.1
B 4 171 631489 5072.88 650 633 124.4
B 5 255 152256 1219.24 650 633 124.4
B 5 172 131834 1055.02 650 633 124.4
C 15 214 239066 1568.37 649 653 152.0
C 0 10 139516 913.49 649 653 152.0
C 14 67 37919 245.15 649 653 152.0
D 8 195 820856 5190.64 642 624 158.0
D 2 250 410325 2592.69 642 624 158.0
D 8 230 171223 1079.59 642 624 158.0

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