ASTROSAT CZTI

Data Quality Report

Orbit 54705

Creation date: 2025-11-13T14:55:51.094105
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_103T01_9000006524_54705cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54705cztM0_level2_quad_clean.evt
Size (bytes)520,882,56094,150,080
Size496.8 MB 89.8 MB
Events in quadrant A3,725,672640,504
Events in quadrant B5,248,950658,020
Events in quadrant C4,417,828591,992
Events in quadrant D5,386,127508,715

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153842
B0199802
C0177112
D0205777

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64731922.966167%
B64735498.481384%
C64733665.654256%
D647288913.736094%

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 7658 6475 92 92 1.20% 1.42%
B 7658 6475 414 414 5.41% 6.39%
C 7658 6475 163 163 2.13% 2.52%
D 7657 6473 650 650 8.49% 10.04%

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 14 383821 2198.24 704 687 174.3
A 0 8 285343 1633.22 704 687 174.3
A 3 14 138176 788.85 704 687 174.3
B 2 249 1411664 9780.07 681 658 144.3
B 7 0 438890 3037.5 681 658 144.3
B 1 255 360435 2493.71 681 658 144.3
C 3 242 693908 3813.38 663 659 181.8
C 4 5 633927 3483.44 663 659 181.8
C 14 254 173321 949.76 663 659 181.8
D 11 129 1929276 10582.72 630 602 182.2
D 3 224 344822 1888.75 630 602 182.2
D 3 12 201024 1099.72 630 602 182.2

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