ASTROSAT CZTI

Data Quality Report

Orbit 58493

Creation date: 2026-07-20T22:14:47.371104
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_044T04_9000006592_58493cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58493cztM0_level2_quad_clean.evt
Size (bytes)510,396,48099,783,360
Size486.8 MB 95.2 MB
Events in quadrant A3,385,411660,730
Events in quadrant B6,170,765684,183
Events in quadrant C4,585,801609,120
Events in quadrant D4,216,525586,715

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149232
B0232302
C0186112
D0173292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6890851.233672%
B68914666.762444%
C68913925.688579%
D68912553.700479%

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 7735 6891 22 22 0.28% 0.32%
B 7736 6892 377 377 4.87% 5.47%
C 7736 6892 344 344 4.45% 4.99%
D 7736 6892 168 168 2.17% 2.44%

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 17 202026 1053.2 770 751 191.1
A 12 114 51391 264.98 770 751 191.1
A 10 251 30381 155.04 770 751 191.1
B 5 172 2251643 13984.86 747 721 161.0
B 7 0 476037 2953.11 747 721 161.0
B 2 249 72015 442.95 747 721 161.0
C 13 3 813381 4022.91 733 725 202.0
C 15 223 261256 1289.71 733 725 202.0
C 14 254 241366 1191.25 733 725 202.0
D 3 12 404573 1922.87 740 708 210.0
D 2 120 340170 1616.24 740 708 210.0
D 2 31 117574 556.42 740 708 210.0

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