ASTROSAT CZTI

Data Quality Report

Orbit 56553

Creation date: 2026-03-12T09:10:49.929025
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_060T01_9000006556_56553cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56553cztM0_level2_quad_clean.evt
Size (bytes)514,103,040100,990,080
Size490.3 MB 96.3 MB
Events in quadrant A3,366,835674,917
Events in quadrant B6,492,081659,668
Events in quadrant C4,202,197640,481
Events in quadrant D4,418,595589,004

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150632
B0242492
C0173923
D0181432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7089520.733531%
B708992313.020172%
C70881371.932844%
D70882543.583521%

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 7869 7090 14 14 0.18% 0.20%
B 7869 7089 557 557 7.08% 7.86%
C 7868 7089 100 100 1.27% 1.41%
D 7868 7089 191 191 2.43% 2.69%

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 45 96722 497.06 781 762 193.1
A 11 31 55419 283.11 781 762 193.1
A 8 249 48224 245.85 781 762 193.1
B 5 172 2484318 15610.27 742 715 159.1
B 4 206 501986 3150.65 742 715 159.1
B 5 185 174073 1089.61 742 715 159.1
C 12 252 528701 2524.19 761 752 209.2
C 6 223 429542 2050.1 761 752 209.2
C 9 38 87139 413.03 761 752 209.2
D 2 249 726863 3418.51 747 715 212.4
D 2 207 225033 1056.03 747 715 212.4
D 8 240 103052 481.77 747 715 212.4

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