ASTROSAT CZTI

Data Quality Report

Orbit 54179

Creation date: 2025-10-03T15:09:26.061203
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_012T01_9000006512_54179cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54179cztM0_level2_quad_clean.evt
Size (bytes)621,552,96088,358,400
Size592.8 MB 84.3 MB
Events in quadrant A4,032,606598,331
Events in quadrant B4,467,844657,950
Events in quadrant C4,533,781580,307
Events in quadrant D9,462,036378,703

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169201
B0178201
C0179441
D0326181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65933625.490672%
B65942283.457689%
C65942954.473764%
D6594238536.169245%

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 7518 6594 238 238 3.17% 3.61%
B 7519 6595 121 121 1.61% 1.83%
C 7519 6595 247 247 3.29% 3.75%
D 7519 6595 2217 2217 29.49% 33.62%

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 7 29 862211 5132.48 676 660 167.9
A 15 174 313581 1864.15 676 660 167.9
A 0 8 152311 903.42 676 660 167.9
B 14 167 573907 3972.02 674 651 144.3
B 5 185 450657 3118.04 674 651 144.3
B 15 20 336043 2323.89 674 651 144.3
C 15 177 850054 4673.88 654 647 181.7
C 15 215 365047 2005.12 654 647 181.7
C 10 171 305154 1675.56 654 647 181.7
D 8 176 6799961 44602.24 528 503 152.4
D 10 181 271794 1779.58 528 503 152.4
D 3 12 116194 758.9 528 503 152.4

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