ASTROSAT CZTI

Data Quality Report

Orbit 58426

Creation date: 2026-07-16T09:07:11.485185
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_045T01_9000006590_58426cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58426cztM0_level2_quad_clean.evt
Size (bytes)402,963,84099,210,240
Size384.3 MB 94.6 MB
Events in quadrant A3,009,074659,027
Events in quadrant B3,720,660698,657
Events in quadrant C3,471,255624,926
Events in quadrant D4,212,643570,815

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134422
B0153682
C0148302
D0171242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6460460.712074%
B64602443.777090%
C64601111.718266%
D64602594.009288%

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 7690 6462 3 3 0.04% 0.05%
B 7690 6462 133 133 1.73% 2.06%
C 7690 6462 73 73 0.95% 1.13%
D 7690 6462 207 207 2.69% 3.20%

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 62 63790 340.55 746 726 185.2
A 3 245 13912 71.21 746 726 185.2
A 12 114 11902 60.35 746 726 185.2
B 4 201 246608 1583.91 732 706 155.3
B 4 171 243429 1563.43 732 706 155.3
B 6 255 78443 500.72 732 706 155.3
C 12 252 384163 1948.1 715 709 196.8
C 6 223 112860 569.77 715 709 196.8
C 14 254 44365 221.79 715 709 196.8
D 2 120 750080 3785.01 701 672 198.0
D 8 240 319473 1610.16 701 672 198.0
D 12 248 227118 1143.7 701 672 198.0

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