ASTROSAT CZTI

Data Quality Report

Orbit 58808

Creation date: 2026-08-11T02:17:03.831525
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_106T01_9000006596_58808cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58808cztM0_level2_quad_clean.evt
Size (bytes)699,085,44094,518,720
Size666.7 MB 90.1 MB
Events in quadrant A3,362,091697,109
Events in quadrant B4,672,611719,013
Events in quadrant C7,598,467498,045
Events in quadrant D9,685,485445,627

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151730
B0188080
C0275130
D0339640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7208270.374584%
B72082924.051054%
C7207192926.765645%
D7207210529.207715%

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 7208 7208 22 22 0.31% 0.31%
B 7207 7207 253 253 3.51% 3.51%
C 7207 7207 1450 1450 20.12% 20.12%
D 7206 7206 2097 2097 29.10% 29.10%

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 13 248 69789 352.11 787 768 196.0
A 15 233 53274 267.86 787 768 196.0
A 2 143 40878 204.62 787 768 196.0
B 2 136 541709 3272.87 769 744 165.3
B 2 249 277230 1672.76 769 744 165.3
B 4 236 271350 1637.18 769 744 165.3
C 15 198 4594568 26135.84 632 626 175.8
C 12 252 213929 1213.52 632 626 175.8
C 13 3 90647 512.15 632 626 175.8
D 12 110 5267908 28053.78 652 622 187.8
D 2 249 1050820 5593.4 652 622 187.8
D 11 129 386802 2056.81 652 622 187.8

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