ASTROSAT CZTI

Data Quality Report

Orbit 39996

Creation date: 2024-06-27T22:11:03.272943
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/AS1A12_054T03_9000005516_39996cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39996cztM0_level2_quad_clean.evt
Size (bytes)324,218,88097,879,680
Size309.2 MB 93.3 MB
Events in quadrant A2,938,360658,482
Events in quadrant B2,750,109689,774
Events in quadrant C3,032,339647,120
Events in quadrant D2,860,675591,240

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120192
B0117061
C0122451
D0122841

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5391290.537934%
B5391410.760527%
C5391881.632350%
D5391420.779076%

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 7423 5392 20 20 0.27% 0.37%
B 7423 5392 18 18 0.24% 0.33%
C 7423 5392 96 96 1.29% 1.78%
D 7423 5392 39 39 0.53% 0.72%

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 10 83 462173 3698.9 612 602 124.8
A 13 248 92857 739.3 612 602 124.8
A 13 254 7506 55.33 612 602 124.8
B 4 171 291602 2461.34 617 601 118.2
B 12 111 14344 116.24 617 601 118.2
B 11 111 13085 105.59 617 601 118.2
C 15 208 348072 2492.53 600 605 139.4
C 15 214 225002 1609.7 600 605 139.4
C 14 254 74985 533.56 600 605 139.4
D 12 227 194900 1338.76 592 576 145.2
D 13 249 130657 896.17 592 576 145.2
D 2 250 108229 741.66 592 576 145.2

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