ASTROSAT CZTI

Data Quality Report

Orbit 54080

Creation date: 2025-09-27T10:39:23.014948
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_041T01_9000006510_54080cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54080cztM0_level2_quad_clean.evt
Size (bytes)565,525,44091,157,760
Size539.3 MB 86.9 MB
Events in quadrant A3,596,116630,571
Events in quadrant B7,025,249554,067
Events in quadrant C4,387,659584,770
Events in quadrant D5,432,480547,847

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151371
B0252091
C0173831
D0206041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63422704.257332%
B6342159525.149795%
C63423575.629139%
D63433785.959325%

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 7512 6342 180 180 2.40% 2.84%
B 7512 6341 1313 1313 17.48% 20.71%
C 7512 6342 294 294 3.91% 4.64%
D 7513 6343 361 361 4.81% 5.69%

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 740041 4391.77 682 663 168.4
A 12 15 69900 411.26 682 663 168.4
A 14 235 46416 271.76 682 663 168.4
B 5 236 4202971 33252.14 595 577 126.4
B 5 185 120415 948.24 595 577 126.4
B 0 213 103184 811.89 595 577 126.4
C 9 38 819230 4520.98 661 655 181.1
C 13 3 469740 2590.75 661 655 181.1
C 1 16 91597 502.27 661 655 181.1
D 2 172 1344183 7186.15 660 630 187.0
D 3 12 677665 3621.2 660 630 187.0
D 8 176 542907 2900.43 660 630 187.0

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