ASTROSAT CZTI

Data Quality Report

Orbit 41722

Creation date: 2024-06-27T22:32:01.740269
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_077T12_9000005692_41722cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41722cztM0_level2_quad_clean.evt
Size (bytes)341,202,24088,165,440
Size325.4 MB 84.1 MB
Events in quadrant A2,830,483609,059
Events in quadrant B2,312,636618,376
Events in quadrant C2,906,515561,256
Events in quadrant D4,188,376528,174

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115243
B0102522
C0116112
D0158502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5036190.377284%
B503680.158856%
C50362144.249404%
D50362635.222399%

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 7189 5037 7 7 0.10% 0.14%
B 7189 5037 1 1 0.01% 0.02%
C 7189 5037 206 206 2.87% 4.09%
D 7189 5037 283 283 3.94% 5.62%

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 528356 4426.88 582 571 119.2
A 7 3 37285 307.94 582 571 119.2
A 13 248 11303 90.02 582 571 119.2
B 5 255 33890 298.01 572 557 111.9
B 12 111 13605 116.66 572 557 111.9
B 11 111 12806 109.51 572 557 111.9
C 0 10 547320 4269.78 549 553 128.1
C 15 214 200960 1565.01 549 553 128.1
C 14 254 9283 68.17 549 553 128.1
D 12 79 1192578 8748.75 556 543 136.3
D 13 249 566619 4154.62 556 543 136.3
D 1 47 115850 846.28 556 543 136.3

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