ASTROSAT CZTI

Data Quality Report

Orbit 41408

Creation date: 2024-06-27T22:28:39.897602
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_035T01_9000005666_41408cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41408cztM0_level2_quad_clean.evt
Size (bytes)352,241,28095,391,360
Size335.9 MB 91.0 MB
Events in quadrant A3,598,967632,745
Events in quadrant B2,897,580648,645
Events in quadrant C3,349,579610,245
Events in quadrant D2,731,083582,576

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141603
B0126042
C0135772
D0123692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5928621.045884%
B5928150.253036%
C59281893.188259%
D5928220.371120%

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 7210 5929 45 45 0.62% 0.76%
B 7210 5929 3 3 0.04% 0.05%
C 7210 5929 190 190 2.64% 3.20%
D 7210 5929 14 14 0.19% 0.24%

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 563475 4167.33 654 640 135.1
A 13 248 463243 3425.19 654 640 135.1
A 2 79 20603 147.81 654 640 135.1
B 5 255 272305 2126.61 648 629 127.8
B 0 190 27960 213.94 648 629 127.8
B 0 186 25233 192.59 648 629 127.8
C 0 10 531679 3602.58 628 631 147.4
C 15 214 261707 1771.11 628 631 147.4
C 3 233 42435 283.59 628 631 147.4
D 13 249 93079 578.9 644 625 159.7
D 12 79 67647 419.66 644 625 159.7
D 1 52 47303 292.27 644 625 159.7

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