ASTROSAT CZTI

Data Quality Report

Orbit 38866

Creation date: 2024-06-27T21:57:26.136181
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_077T06_9000005408_38866cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38866cztM0_level2_quad_clean.evt
Size (bytes)329,731,20095,472,000
Size314.5 MB 91.0 MB
Events in quadrant A2,807,403649,979
Events in quadrant B2,789,147668,885
Events in quadrant C2,603,802644,797
Events in quadrant D3,617,498578,390

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114863
B0114262
C0107902
D0140802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4978160.321414%
B4978470.944154%
C4978160.321414%
D49781893.796706%

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 6980 4979 5 5 0.07% 0.10%
B 6980 4979 32 32 0.46% 0.64%
C 6980 4979 9 9 0.13% 0.18%
D 6980 4979 212 212 3.04% 4.26%

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 396059 3245.9 604 592 121.8
A 13 248 48136 390.23 604 592 121.8
A 13 254 9264 71.18 604 592 121.8
B 4 171 268158 2334.77 604 589 114.6
B 15 32 39385 338.53 604 589 114.6
B 4 251 37349 320.76 604 589 114.6
C 15 214 207401 1491.0 599 604 138.7
C 0 10 45944 326.9 599 604 138.7
C 15 159 9214 62.08 599 604 138.7
D 12 227 418570 2948.26 586 569 141.8
D 2 250 271659 1912.06 586 569 141.8
D 5 157 205061 1442.33 586 569 141.8

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