ASTROSAT CZTI

Data Quality Report

Orbit 55361

Creation date: 2025-12-22T04:52:09.088949
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_009T01_9000006534_55361cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55361cztM0_level2_quad_clean.evt
Size (bytes)625,184,640153,227,520
Size596.2 MB 146.1 MB
Events in quadrant A4,977,401995,745
Events in quadrant B4,812,0021,068,665
Events in quadrant C5,525,519960,470
Events in quadrant D7,008,518883,812

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229142
B0223042
C0240352
D0284662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10550600.568720%
B10550830.786730%
C10550930.881517%
D105504153.933649%

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 12580 10552 43 43 0.34% 0.41%
B 12580 10552 15 15 0.12% 0.14%
C 12580 10552 74 74 0.59% 0.70%
D 12580 10552 330 330 2.62% 3.13%

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 0 8 275871 1015.32 1099 1072 270.7
A 12 115 219075 805.47 1099 1072 270.7
A 3 14 85699 312.68 1099 1072 270.7
B 0 199 191913 817.02 1095 1052 233.6
B 10 247 83724 353.89 1095 1052 233.6
B 5 185 58553 246.14 1095 1052 233.6
C 12 249 293689 982.04 1085 1077 298.0
C 7 64 261145 872.82 1085 1077 298.0
C 13 3 212864 710.78 1085 1077 298.0
D 11 129 793511 2609.54 1068 1021 303.7
D 2 31 599858 1971.87 1068 1021 303.7
D 11 176 477269 1568.21 1068 1021 303.7

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