ASTROSAT CZTI

Data Quality Report

Orbit 56170

Creation date: 2026-02-14T14:35:02.598162
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_083T04_9000006550_56170cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56170cztM0_level2_quad_clean.evt
Size (bytes)464,866,56090,394,560
Size443.3 MB 86.2 MB
Events in quadrant A5,364,087559,083
Events in quadrant B3,672,688633,064
Events in quadrant C2,894,058583,705
Events in quadrant D4,782,856517,991

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202901
B0153851
C0134551
D0186861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A635368610.798048%
B63543625.697199%
C6354821.290526%
D63544807.554297%

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 7378 6354 536 536 7.26% 8.44%
B 7379 6355 202 202 2.74% 3.18%
C 7379 6355 21 21 0.28% 0.33%
D 7379 6354 353 353 4.78% 5.56%

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 12 115 1539495 9458.8 661 645 162.7
A 9 250 388926 2386.63 661 645 162.7
A 15 32 370881 2275.72 661 645 162.7
B 5 185 801924 5598.17 666 641 143.1
B 5 172 54321 375.04 666 641 143.1
B 10 247 31472 215.4 666 641 143.1
C 12 254 172340 932.2 672 665 184.2
C 12 252 70588 379.68 672 665 184.2
C 12 249 11471 58.67 672 665 184.2
D 8 129 1284102 7023.73 646 619 182.7
D 8 240 341218 1863.89 646 619 182.7
D 2 31 218221 1190.8 646 619 182.7

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