ASTROSAT CZTI

Data Quality Report

Orbit 58849

Creation date: 2026-08-14T10:54:26.427045
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/AS1A14_106T01_9000006596_58849cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58849cztM0_level2_quad_clean.evt
Size (bytes)586,595,52083,111,040
Size559.4 MB 79.3 MB
Events in quadrant A9,900,733380,767
Events in quadrant B4,765,703610,769
Events in quadrant C2,828,598573,481
Events in quadrant D3,749,883529,698

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0335631
B0181331
C0128591
D0151541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6038255542.315336%
B60384837.999338%
C6038530.877774%
D60372103.478549%

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 6977 6038 2139 2139 30.66% 35.43%
B 6978 6039 313 313 4.49% 5.18%
C 6978 6039 15 15 0.21% 0.25%
D 6977 6038 125 125 1.79% 2.07%

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 15 233 3674711 26114.26 560 543 140.7
A 3 14 1894416 13460.76 560 543 140.7
A 3 95 1346795 9568.53 560 543 140.7
B 2 249 670354 4761.15 653 630 140.7
B 5 185 612875 4352.52 653 630 140.7
B 15 32 499835 3548.91 653 630 140.7
C 15 165 100569 552.66 656 648 180.8
C 12 252 64525 353.3 656 648 180.8
C 3 233 17198 91.54 656 648 180.8
D 8 160 208130 1111.47 652 621 186.7
D 12 110 165482 883.04 652 621 186.7
D 15 94 164462 877.57 652 621 186.7

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

TCT plots

Parameter TCT0 TCT_healed
Tct