ASTROSAT CZTI

Data Quality Report

Orbit 58819

Creation date: 2026-08-11T19:34:47.741565
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_58819cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58819cztM0_level2_quad_clean.evt
Size (bytes)576,233,28089,827,200
Size549.5 MB 85.7 MB
Events in quadrant A4,354,250622,576
Events in quadrant B4,648,954629,960
Events in quadrant C3,473,724591,814
Events in quadrant D8,370,637440,645

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170161
B0179911
C0145941
D0291456

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62212904.661630%
B62225639.048537%
C62221722.764384%
D6221170327.375020%

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 7302 6221 193 193 2.64% 3.10%
B 7303 6222 357 357 4.89% 5.74%
C 7303 6222 70 70 0.96% 1.13%
D 7302 6221 1548 1548 21.20% 24.88%

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 10 248 1148512 6496.32 711 693 176.7
A 3 14 155812 877.93 711 693 176.7
A 2 143 77187 432.93 711 693 176.7
B 5 172 742142 5044.94 684 660 147.0
B 4 171 692600 4707.87 684 660 147.0
B 5 185 119183 806.41 684 660 147.0
C 13 3 280458 1476.13 688 680 189.5
C 9 38 248621 1308.16 688 680 189.5
C 6 223 91240 477.8 688 680 189.5
D 12 110 3745194 20878.63 627 599 179.4
D 2 249 1631529 9093.53 627 599 179.4
D 13 105 145645 808.73 627 599 179.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct