ASTROSAT CZTI

Data Quality Report

Orbit 58877

Creation date: 2026-08-15T17:15:35.963492
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_004T07_9000006598_58877cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58877cztM0_level2_quad_clean.evt
Size (bytes)665,481,60082,270,080
Size634.7 MB 78.5 MB
Events in quadrant A4,433,521610,514
Events in quadrant B3,656,576665,710
Events in quadrant C12,446,155217,556
Events in quadrant D3,616,407565,146

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172221
B0145601
C0411102
D0149041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61924026.492248%
B61923305.329457%
C6191419667.775804%
D61911822.939751%

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 7272 6192 204 204 2.81% 3.29%
B 7271 6191 115 115 1.58% 1.86%
C 7271 6191 4180 4180 57.49% 67.52%
D 7271 6191 73 73 1.00% 1.18%

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 14 238 929765 5238.68 716 696 177.3
A 15 233 505074 2844.0 716 696 177.3
A 3 14 120617 676.19 716 696 177.3
B 4 236 318260 2076.19 707 681 153.0
B 5 172 209667 1366.26 707 681 153.0
B 6 255 71764 464.71 707 681 153.0
C 9 38 10229898 78808.27 469 464 129.8
C 7 87 188243 1446.66 469 464 129.8
C 6 223 66292 507.14 469 464 129.8
D 11 129 347846 1736.07 703 673 200.0
D 8 160 123446 613.94 703 673 200.0
D 6 239 99228 492.83 703 673 200.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct