ASTROSAT CZTI

Data Quality Report

Orbit 38664

Creation date: 2024-06-27T21:54:49.373855
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_054T01_9000005392_38664cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38664cztM0_level2_quad_clean.evt
Size (bytes)365,947,20095,336,640
Size349.0 MB 90.9 MB
Events in quadrant A3,287,668657,233
Events in quadrant B3,113,407654,626
Events in quadrant C2,598,308639,448
Events in quadrant D4,140,426570,105

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130563
B0125142
C0107342
D0159222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5222831.589429%
B52222675.112984%
C522260.114899%
D52222394.576791%

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 7284 5223 43 43 0.59% 0.82%
B 7284 5223 219 219 3.01% 4.19%
C 7284 5223 3 3 0.04% 0.06%
D 7284 5223 206 206 2.83% 3.94%

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 13 248 497867 4017.52 614 605 123.8
A 10 83 393650 3175.52 614 605 123.8
A 13 254 10078 76.54 614 605 123.8
B 4 251 647653 5699.69 596 581 113.5
B 5 172 50624 440.8 596 581 113.5
B 5 184 26092 224.71 596 581 113.5
C 15 214 211731 1523.39 597 601 138.6
C 14 254 25009 176.11 597 601 138.6
C 0 10 15655 108.62 597 601 138.6
D 9 49 808653 5686.93 583 569 142.1
D 10 118 544553 3828.31 583 569 142.1
D 12 6 90180 630.64 583 569 142.1

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