ASTROSAT CZTI

Data Quality Report

Orbit 56566

Creation date: 2026-03-13T06:03:22.342172
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_083T06_9000006558_56566cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56566cztM0_level2_quad_clean.evt
Size (bytes)576,446,40084,274,560
Size549.7 MB 80.4 MB
Events in quadrant A9,729,361358,216
Events in quadrant B3,146,830676,584
Events in quadrant C3,781,434561,831
Events in quadrant D4,189,017514,162

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331583
B0137622
C0160322
D0170452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6320282144.636076%
B6320641.012658%
C63203415.395570%
D63204416.977848%

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 7485 6320 2579 2579 34.46% 40.81%
B 7485 6321 18 18 0.24% 0.28%
C 7485 6321 283 283 3.78% 4.48%
D 7485 6320 355 355 4.74% 5.62%

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 7 64 5017159 37477.06 532 519 133.9
A 12 3 1789133 13361.93 532 519 133.9
A 4 95 332296 2478.56 532 519 133.9
B 10 247 116419 795.92 683 657 145.4
B 4 171 86750 591.93 683 657 145.4
B 4 21 80049 545.86 683 657 145.4
C 15 230 586729 3374.35 636 630 173.7
C 13 3 347315 1995.97 636 630 173.7
C 6 223 101471 580.57 636 630 173.7
D 2 249 773493 4328.57 626 597 178.6
D 8 129 441302 2468.15 626 597 178.6
D 5 32 125718 700.73 626 597 178.6

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