ASTROSAT CZTI

Data Quality Report

Orbit 40061

Creation date: 2024-06-27T22:11:51.875827
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_40061cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40061cztM0_level2_quad_clean.evt
Size (bytes)426,623,04095,417,280
Size406.9 MB 91.0 MB
Events in quadrant A3,427,371642,141
Events in quadrant B3,281,869658,214
Events in quadrant C4,650,132614,784
Events in quadrant D3,962,890552,391

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138192
B0139191
C0177571
D0161131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6043791.307298%
B60431482.449115%
C60433335.510508%
D60434086.751613%

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 7356 6044 55 55 0.75% 0.91%
B 7356 6044 90 90 1.22% 1.49%
C 7356 6044 323 323 4.39% 5.34%
D 7356 6044 341 341 4.64% 5.64%

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 521816 3886.29 657 643 134.1
A 13 248 272278 2025.53 657 643 134.1
A 7 3 32450 237.18 657 643 134.1
B 4 171 562806 4378.82 653 635 128.4
B 15 201 49651 381.79 653 635 128.4
B 0 230 41877 321.24 653 635 128.4
C 9 187 1860151 12498.51 637 641 148.8
C 15 214 248506 1666.0 637 641 148.8
C 14 254 19734 128.33 637 641 148.8
D 12 233 717410 4654.76 623 604 154.0
D 13 171 337355 2186.78 623 604 154.0
D 2 250 181231 1172.95 623 604 154.0

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