ASTROSAT CZTI

Data Quality Report

Orbit 33522

Creation date: 2024-06-27T20:49:44.447696
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/AS1A11_060T01_9000004804_33522cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33522cztM0_level2_quad_clean.evt
Size (bytes)512,559,36068,808,960
Size488.8 MB 65.6 MB
Events in quadrant A2,487,926454,709
Events in quadrant B5,063,019412,441
Events in quadrant C3,248,931433,036
Events in quadrant D4,363,788411,700

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107373
B0186012
C0130822
D0165822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A530360.113144%
B530389116.801810%
C5303961.810296%
D53031142.149727%

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 7126 5304 1 1 0.01% 0.02%
B 7126 5304 587 587 8.24% 11.07%
C 7126 5304 84 84 1.18% 1.58%
D 7126 5304 114 114 1.60% 2.15%

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 8737 63.55 640 629 127.6
A 9 143 6486 45.91 640 629 127.6
A 3 137 6302 44.47 640 629 127.6
B 5 255 1902273 16617.44 600 585 114.4
B 5 172 749466 6543.91 600 585 114.4
B 4 170 15259 128.23 600 585 114.4
C 0 10 275203 1911.91 618 624 143.6
C 15 214 246771 1713.94 618 624 143.6
C 3 233 163995 1137.56 618 624 143.6
D 8 195 1245002 8387.46 613 596 148.4
D 2 250 280207 1884.62 613 596 148.4
D 12 6 171788 1153.86 613 596 148.4

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