ASTROSAT CZTI

Data Quality Report

Orbit 56764

Creation date: 2026-03-26T14:53:13.549236
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_083T05_9000006560_56764cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56764cztM0_level2_quad_clean.evt
Size (bytes)413,006,40088,608,960
Size393.9 MB 84.5 MB
Events in quadrant A3,570,210584,758
Events in quadrant B4,617,514589,691
Events in quadrant C3,304,471549,146
Events in quadrant D3,311,759524,598

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144681
B0180441
C0144531
D0142501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62211021.639608%
B62215989.612602%
C62222524.050145%
D62221933.101896%

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 7081 6222 9 9 0.13% 0.14%
B 7081 6222 399 399 5.63% 6.41%
C 7082 6223 135 135 1.91% 2.17%
D 7082 6223 96 96 1.36% 1.54%

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 14 620692 3719.76 669 651 166.7
A 15 33 119424 712.55 669 651 166.7
A 10 251 95793 570.78 669 651 166.7
B 5 185 1587208 11399.29 638 613 139.2
B 10 247 222516 1594.32 638 613 139.2
B 4 206 57054 405.51 638 613 139.2
C 15 230 470648 2678.77 642 638 175.5
C 12 249 141937 805.32 642 638 175.5
C 6 223 94462 534.74 642 638 175.5
D 2 249 347025 1905.68 646 617 181.8
D 3 12 96106 525.31 646 617 181.8
D 2 62 90468 494.29 646 617 181.8

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