ASTROSAT CZTI

Data Quality Report

Orbit 58884

Creation date: 2026-08-16T05:09:55.196564
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_58884cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58884cztM0_level2_quad_clean.evt
Size (bytes)379,540,80058,803,840
Size362.0 MB 56.1 MB
Events in quadrant A3,031,868394,201
Events in quadrant B2,222,853421,346
Events in quadrant C2,081,847381,140
Events in quadrant D6,383,330285,600

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119480
B097350
C093200
D0219130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A42371333.139013%
B4237671.581308%
C4237420.991267%
D423896222.699387%

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 4237 4237 180 180 4.25% 4.25%
B 4237 4237 56 56 1.32% 1.32%
C 4237 4237 48 48 1.13% 1.13%
D 4238 4238 1009 1009 23.81% 23.81%

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 15 233 746162 6813.64 433 421 109.4
A 14 238 511311 4667.87 433 421 109.4
A 3 14 46939 425.02 433 421 109.4
B 5 185 169299 1813.59 430 415 93.1
B 7 0 112838 1207.28 430 415 93.1
B 4 236 76033 812.04 430 415 93.1
C 15 131 109094 917.98 426 422 118.4
C 12 249 86223 724.78 426 422 118.4
C 6 13 75870 637.33 426 422 118.4
D 12 110 3455606 30414.47 393 374 113.6
D 11 129 1050483 9243.52 393 374 113.6
D 2 249 120992 1061.73 393 374 113.6

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