ASTROSAT CZTI

Data Quality Report

Orbit 59017

Creation date: 2026-08-25T04:18:07.775959
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_004T02_9000006600_59017cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59017cztM0_level2_quad_clean.evt
Size (bytes)740,615,04083,638,080
Size706.3 MB 79.8 MB
Events in quadrant A3,047,635650,345
Events in quadrant B4,487,715639,956
Events in quadrant C12,433,424221,463
Events in quadrant D6,931,491557,531

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139332
B0179552
C0412542
D0252012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6636310.467149%
B66365758.664858%
C6636446967.344786%
D66364757.157926%

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 7611 6636 12 12 0.16% 0.18%
B 7611 6636 451 451 5.93% 6.80%
C 7610 6635 4423 4423 58.12% 66.66%
D 7611 6636 717 717 9.42% 10.80%

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 10 251 108432 597.63 727 710 180.2
A 3 245 43382 236.74 727 710 180.2
A 3 14 24804 133.67 727 710 180.2
B 2 249 1393042 9362.7 696 668 148.7
B 5 185 86867 579.63 696 668 148.7
B 4 236 71172 474.09 696 668 148.7
C 15 219 10466644 81957.57 464 460 127.7
C 1 16 47238 366.3 464 460 127.7
C 12 252 44089 341.65 464 460 127.7
D 12 110 3561273 17851.33 695 663 199.5
D 11 129 149095 744.17 695 663 199.5
D 12 1 134443 670.71 695 663 199.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct