ASTROSAT CZTI

Data Quality Report

Orbit 39392

Creation date: 2024-06-27T22:04:01.339174
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_018T01_9000005470_39392cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39392cztM0_level2_quad_clean.evt
Size (bytes)424,068,48087,180,480
Size404.4 MB 83.1 MB
Events in quadrant A2,732,340597,848
Events in quadrant B2,353,952616,116
Events in quadrant C3,946,095565,186
Events in quadrant D6,250,548486,666

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113243
B0108622
C0153322
D0223272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A534050.093633%
B534040.074906%
C5340891.666667%
D534073213.707865%

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 7073 5341 4 4 0.06% 0.07%
B 7073 5341 0 0 0.00% 0.00%
C 7073 5341 104 104 1.47% 1.95%
D 7073 5341 679 679 9.60% 12.71%

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 429696 3648.57 581 569 117.6
A 13 248 34422 287.83 581 569 117.6
A 13 254 8636 68.59 581 569 117.6
B 5 172 83696 742.83 576 560 111.9
B 12 111 13777 118.1 576 560 111.9
B 11 111 12951 110.71 576 560 111.9
C 9 187 1357715 10464.0 556 559 129.7
C 15 214 243155 1870.47 556 559 129.7
C 15 208 85554 655.33 556 559 129.7
D 12 235 3545506 26777.04 535 520 132.4
D 2 120 186188 1402.44 535 520 132.4
D 7 38 177499 1336.81 535 520 132.4

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