ASTROSAT CZTI

Data Quality Report

Orbit 41174

Creation date: 2024-06-27T22:25:31.219517
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_101T04_9000005610_41174cztM0_level2.fits modeM0/AS1A12_101T04_9000005610_41174cztM0_level2_quad_clean.evt
Size (bytes)474,333,12083,615,040
Size452.4 MB 79.7 MB
Events in quadrant A2,979,644613,873
Events in quadrant B3,969,301581,345
Events in quadrant C6,632,871437,055
Events in quadrant D3,550,898516,340

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120923
B0156022
C0233512
D0145082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5469140.255988%
B54694307.862498%
C5469155228.378131%
D54693175.796306%

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 7082 5470 2 2 0.03% 0.04%
B 7082 5470 342 342 4.83% 6.25%
C 7082 5470 1281 1281 18.09% 23.42%
D 7082 5470 271 271 3.83% 4.95%

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 551222 4400.32 606 593 125.1
A 12 189 66863 529.59 606 593 125.1
A 13 248 15977 122.94 606 593 125.1
B 0 186 876026 7756.75 580 563 112.9
B 0 229 580904 5141.92 580 563 112.9
B 5 255 174522 1541.31 580 563 112.9
C 9 54 4132534 34617.53 509 512 119.4
C 0 10 288800 2415.24 509 512 119.4
C 15 214 206184 1723.09 509 512 119.4
D 13 249 980504 6909.92 572 555 141.8
D 2 249 177104 1244.9 572 555 141.8
D 12 233 138526 972.88 572 555 141.8

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