ASTROSAT CZTI

Data Quality Report

Orbit 52614

Creation date: 2025-06-20T11:20:58.475210
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/AS1C09_011T06_9000006478_52614cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52614cztM0_level2_quad_clean.evt
Size (bytes)942,589,44069,503,040
Size898.9 MB 66.3 MB
Events in quadrant A3,350,274608,808
Events in quadrant B9,097,117515,585
Events in quadrant C15,077,28146,627
Events in quadrant D6,876,655490,850

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146762
B0314922
C0490862
D0249272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63411221.923987%
B6341169426.715029%
C6341592193.376439%
D634194514.903012%

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 7506 6342 90 90 1.20% 1.42%
B 7506 6342 1336 1336 17.80% 21.07%
C 7506 6342 4874 4874 64.93% 76.85%
D 7506 6342 817 817 10.88% 12.88%

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 14 254 206868 1264.55 653 637 163.1
A 4 249 181988 1111.99 653 637 163.1
A 7 243 73259 445.3 653 637 163.1
B 10 128 3823971 30057.92 603 582 127.2
B 10 254 1788571 14056.44 603 582 127.2
B 10 44 465524 3655.18 603 582 127.2
C 15 248 14192136 299643.68 167 165 47.4
C 1 44 55687 1172.27 167 165 47.4
C 12 249 54055 1137.81 167 165 47.4
D 8 176 1434166 8144.63 602 573 176.0
D 2 62 589518 3345.96 602 573 176.0
D 11 176 472825 2682.99 602 573 176.0

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