ASTROSAT CZTI

Data Quality Report

Orbit 53424

Creation date: 2025-08-14T11:54:38.675724
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/AS1C09_011T09_9000006494_53424cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53424cztM0_level2_quad_clean.evt
Size (bytes)647,069,76085,625,280
Size617.1 MB 81.7 MB
Events in quadrant A3,831,312606,256
Events in quadrant B5,037,248631,443
Events in quadrant C10,791,059374,354
Events in quadrant D3,803,317539,598

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157281
B0193841
C0364711
D0157581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63142003.167564%
B63144477.079506%
C6314256040.544821%
D63142143.389294%

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 7324 6314 154 154 2.10% 2.44%
B 7324 6314 267 267 3.65% 4.23%
C 7323 6313 2574 2574 35.15% 40.77%
D 7324 6314 197 197 2.69% 3.12%

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 15 174 374468 2249.73 666 648 166.2
A 4 249 179534 1076.58 666 648 166.2
A 0 8 128284 768.14 666 648 166.2
B 4 206 1247880 8998.43 650 626 138.6
B 4 171 295753 2129.22 650 626 138.6
B 0 171 269356 1938.78 650 626 138.6
C 9 38 4439637 30003.67 543 537 148.0
C 15 224 3039277 20538.7 543 537 148.0
C 15 178 272612 1838.94 543 537 148.0
D 12 1 711983 3900.77 643 615 182.4
D 2 153 206763 1130.41 643 615 182.4
D 2 249 66393 360.69 643 615 182.4

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