ASTROSAT CZTI

Data Quality Report

Orbit 55274

Creation date: 2025-12-16T08:23:18.239116
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_009T01_9000006534_55274cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55274cztM0_level2_quad_clean.evt
Size (bytes)596,744,64095,895,360
Size569.1 MB 91.5 MB
Events in quadrant A9,084,885523,808
Events in quadrant B4,460,470665,939
Events in quadrant C3,657,938633,821
Events in quadrant D4,341,707590,567

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318442
B0184502
C0161122
D0180522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7022165423.554543%
B70234696.678058%
C7023891.267265%
D70231832.605724%

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 8952 7024 1629 1629 18.20% 23.19%
B 8953 7025 306 306 3.42% 4.36%
C 8953 7025 44 44 0.49% 0.63%
D 8953 7025 133 133 1.49% 1.89%

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 12 115 5942668 35224.17 689 673 168.7
A 7 7 145218 856.86 689 673 168.7
A 3 14 106592 627.89 689 673 168.7
B 5 185 1218870 7892.4 715 687 154.3
B 4 81 86431 555.52 715 687 154.3
B 0 199 74428 477.76 715 687 154.3
C 13 3 274614 1367.79 730 721 200.2
C 15 147 180095 895.77 730 721 200.2
C 14 254 100955 500.56 730 721 200.2
D 11 129 963536 4783.02 715 685 201.3
D 7 129 100037 493.54 715 685 201.3
D 11 176 95462 470.81 715 685 201.3

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