ASTROSAT CZTI

Data Quality Report

Orbit 40224

Creation date: 2024-06-27T22:13:48.951699
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/AS1C07_001T01_9000005532_40224cztM0_level2.fits modeM0/AS1C07_001T01_9000005532_40224cztM0_level2_quad_clean.evt
Size (bytes)375,258,24092,324,160
Size357.9 MB 88.0 MB
Events in quadrant A3,726,043605,454
Events in quadrant B3,065,479635,838
Events in quadrant C2,929,826610,301
Events in quadrant D3,729,984548,930

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147523
B0128302
C0119702
D0149462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56482574.550283%
B56481021.805949%
C5648270.478045%
D56482334.125354%

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 7320 5649 169 169 2.31% 2.99%
B 7320 5649 74 74 1.01% 1.31%
C 7320 5649 19 19 0.26% 0.34%
D 7320 5649 188 188 2.57% 3.33%

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 13 248 852047 6667.58 615 601 127.7
A 10 83 491416 3843.52 615 601 127.7
A 3 137 6897 49.3 615 601 127.7
B 0 229 235226 1968.77 618 601 119.2
B 7 202 176112 1472.74 618 601 119.2
B 5 255 132439 1106.27 618 601 119.2
C 15 214 243182 1718.46 610 613 141.2
C 1 16 127165 896.55 610 613 141.2
C 0 10 56775 397.87 610 613 141.2
D 12 227 950876 6456.2 601 583 147.2
D 13 249 232317 1574.38 601 583 147.2
D 2 250 77493 522.52 601 583 147.2

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