ASTROSAT CZTI

Data Quality Report

Orbit 37722

Creation date: 2024-06-27T21:43:36.594393
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_106T02_9000005344_37722cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37722cztM0_level2_quad_clean.evt
Size (bytes)621,385,92067,141,440
Size592.6 MB 64.0 MB
Events in quadrant A8,411,331395,943
Events in quadrant B3,064,267437,552
Events in quadrant C2,823,848438,023
Events in quadrant D4,175,612404,376

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285193
B0121502
C0112252
D0157202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5086190937.534408%
B50861192.339756%
C5086320.629178%
D50863907.668109%

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 7059 5087 1844 1844 26.12% 36.25%
B 7058 5085 89 89 1.26% 1.75%
C 7058 5085 28 28 0.40% 0.55%
D 7058 5085 377 377 5.34% 7.41%

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 15 222 5636704 48090.0 589 580 117.2
A 10 83 317095 2700.65 589 580 117.2
A 6 10 97053 823.15 589 580 117.2
B 5 172 238774 2065.19 615 600 115.3
B 4 81 121601 1049.19 615 600 115.3
B 5 255 63876 548.66 615 600 115.3
C 15 214 219349 1561.38 610 614 140.1
C 0 10 115449 819.72 610 614 140.1
C 1 23 52327 369.14 610 614 140.1
D 2 249 770008 5247.96 600 585 146.6
D 2 250 301890 2055.1 600 585 146.6
D 12 217 297374 2024.29 600 585 146.6

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