ASTROSAT CZTI

Data Quality Report

Orbit 58089

Creation date: 2026-06-23T16:50:23.054142
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_042T02_9000006586_58089cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58089cztM0_level2_quad_clean.evt
Size (bytes)537,966,72094,760,640
Size513.0 MB 90.4 MB
Events in quadrant A3,001,194668,533
Events in quadrant B7,905,562567,811
Events in quadrant C3,258,739630,179
Events in quadrant D5,242,159548,386

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134312
B0280132
C0142982
D0199312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6517741.135492%
B6517155923.922050%
C6517921.411692%
D65165538.486802%

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 7617 6517 2 2 0.03% 0.03%
B 7617 6517 913 913 11.99% 14.01%
C 7617 6517 18 18 0.24% 0.28%
D 7616 6516 392 392 5.15% 6.02%

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 3 245 19755 101.36 762 743 187.6
A 3 61 18524 94.8 762 743 187.6
A 10 251 15970 81.18 762 743 187.6
B 10 128 4308561 29502.73 687 662 146.0
B 5 172 521160 3564.64 687 662 146.0
B 0 63 116533 793.54 687 662 146.0
C 15 208 100093 501.38 732 726 198.2
C 12 252 97919 490.42 732 726 198.2
C 15 201 86157 431.07 732 726 198.2
D 12 110 1338960 6650.54 715 685 201.2
D 8 160 461580 2290.41 715 685 201.2
D 12 1 123655 611.1 715 685 201.2

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