ASTROSAT CZTI

Data Quality Report

Orbit 56666

Creation date: 2026-03-19T23:10:40.939153
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_56666cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56666cztM0_level2_quad_clean.evt
Size (bytes)355,190,40085,135,680
Size338.7 MB 81.2 MB
Events in quadrant A2,795,865568,167
Events in quadrant B2,634,478610,217
Events in quadrant C3,247,091532,257
Events in quadrant D4,023,302466,056

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125781
B0120071
C0137861
D0161481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5740801.393728%
B5740611.062718%
C5741821.428323%
D57414618.029960%

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 6910 5740 49 49 0.71% 0.85%
B 6910 5740 5 5 0.07% 0.09%
C 6911 5741 72 72 1.04% 1.25%
D 6911 5742 450 450 6.51% 7.84%

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 4 249 120282 779.64 620 605 153.5
A 0 12 69413 448.25 620 605 153.5
A 7 64 59916 386.38 620 605 153.5
B 0 213 60737 455.19 616 594 132.1
B 0 245 41749 311.48 616 594 132.1
B 10 247 26483 195.94 616 594 132.1
C 9 38 228537 1408.77 590 584 161.8
C 12 252 202615 1248.57 590 584 161.8
C 1 16 163395 1006.19 590 584 161.8
D 2 249 1203514 7429.42 569 544 161.9
D 8 129 149409 919.37 569 544 161.9
D 2 31 131402 808.17 569 544 161.9

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