ASTROSAT CZTI

Data Quality Report

Orbit 20250128_T05_239T01_9000006444_level2

Creation date: 2025-02-11T03:02:55.726669
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/AS1T05_239T01_9000006444cztM0_level2.fits modeM0/AS1T05_239T01_9000006444cztM0_level2_quad_clean.evt
Size (bytes)5,374,759,6807,452,072,000
Size5.0 GB 6.9 GB
Events in quadrant A32,891,90851,418,362
Events in quadrant B30,439,81251,406,198
Events in quadrant C27,051,56637,811,135
Events in quadrant D24,382,62837,287,448

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019800580
B023760470
C031029220
D029112680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08230
B08240
C08240
D08240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141420
B0141460
C0141420
D0141420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A697646460076.594605%
B6974239948914.265231%
C69722620425729.295666%
D69751916751324.015547%

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 832421 696849 0 0 0.00% 0.00%
B 832421 696794 0 0 0.00% 0.00%
C 832421 687584 0 0 0.00% 0.00%
D 832421 686386 0 0 0.00% 0.00%

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 14 188 34957 9.54 8734 8073 2817.4
A 9 255 33210 8.92 8734 8073 2817.4
A 14 204 28193 7.14 8734 8073 2817.4
B 2 9 33848 14.17 8119 7720 1844.4
B 2 8 31165 12.71 8119 7720 1844.4
B 2 245 24598 9.15 8119 7720 1844.4
C 7 221 21500 6.04 7363 6711 2446.8
C 6 64 21118 5.89 7363 6711 2446.8
C 3 203 20874 5.79 7363 6711 2446.8
D 6 218 32176 11.12 7068 6288 2328.1
D 14 31 21601 6.58 7068 6288 2328.1
D 3 30 21599 6.58 7068 6288 2328.1

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