ASTROSAT CZTI

Data Quality Report

Orbit 37283

Creation date: 2024-06-27T21:37:53.517429
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/AS1A10_094T19_9000005300_37283cztM0_level2.evt modeM0/AS1A10_094T19_9000005300_37283cztM0_level2_quad_clean.evt
Size (bytes)331,485,12085,544,640
Size316.1 MB 81.6 MB
Events in quadrant A2,281,624569,918
Events in quadrant B2,607,808570,710
Events in quadrant C2,390,104572,180
Events in quadrant D2,437,109545,722

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099501
B0109651
C0101191
D0107371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4723180.381114%
B4723661.397417%
C4723240.508152%
D4723671.418590%

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 4723 4723 7 7 0.15% 0.15%
B 4723 4723 27 27 0.57% 0.57%
C 4723 4723 24 24 0.51% 0.51%
D 4723 4723 56 56 1.19% 1.19%

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 190937 1802.69 520 509 105.6
A 9 143 29813 277.41 520 509 105.6
A 13 248 17460 160.47 520 509 105.6
B 5 200 206147 2075.04 514 501 99.1
B 0 213 187579 1887.68 514 501 99.1
B 5 172 148194 1490.28 514 501 99.1
C 15 214 195522 1630.73 510 513 119.6
C 1 23 81918 680.74 510 513 119.6
C 0 10 74026 614.74 510 513 119.6
D 13 249 183448 1481.48 508 494 123.5
D 12 233 72766 585.22 508 494 123.5
D 2 249 72321 581.62 508 494 123.5

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