ASTROSAT CZTI

Data Quality Report

Orbit 58250

Creation date: 2026-07-04T13:16:16.160997
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_044T03_9000006588_58250cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58250cztM0_level2_quad_clean.evt
Size (bytes)680,774,40089,763,840
Size649.2 MB 85.6 MB
Events in quadrant A2,965,656659,854
Events in quadrant B7,747,979584,590
Events in quadrant C3,942,278592,199
Events in quadrant D10,050,539436,816

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134111
B0273971
C0163051
D0342821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6372570.894539%
B6373137621.591087%
C63733455.413463%
D6373189129.672054%

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 7477 6373 2 2 0.03% 0.03%
B 7478 6374 1101 1101 14.72% 17.27%
C 7478 6374 262 262 3.50% 4.11%
D 7478 6374 1881 1881 25.15% 29.51%

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 3 14 55597 303.45 725 705 180.9
A 3 245 35042 189.82 725 705 180.9
A 13 248 17795 94.47 725 705 180.9
B 4 206 3656500 25377.98 671 648 144.1
B 2 249 651464 4517.8 671 648 144.1
B 0 156 190987 1321.28 671 648 144.1
C 12 252 723733 3874.08 675 670 186.6
C 6 223 245831 1313.54 675 670 186.6
C 13 3 122022 650.19 675 670 186.6
D 12 110 6089147 33018.49 641 612 184.4
D 3 224 672756 3645.08 641 612 184.4
D 8 160 258485 1398.46 641 612 184.4

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