ASTROSAT CZTI

Data Quality Report

Orbit 53606

Creation date: 2025-08-26T01:41:35.884401
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_004T05_9000006502_53606cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53606cztM0_level2_quad_clean.evt
Size (bytes)871,251,84094,432,320
Size830.9 MB 90.1 MB
Events in quadrant A4,705,684717,393
Events in quadrant B5,501,069732,906
Events in quadrant C13,446,278345,268
Events in quadrant D8,023,261546,321

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190060
B0214140
C0450470
D0289810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74281181.588584%
B74293184.280522%
C7429408554.987212%
D7429128817.337461%

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 7433 7433 97 97 1.30% 1.30%
B 7434 7434 184 184 2.48% 2.48%
C 7433 7431 3548 3548 47.73% 47.75%
D 7434 7434 1216 1216 16.36% 16.36%

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 3 63 460314 2308.73 796 777 199.0
A 12 17 394392 1977.53 796 777 199.0
A 10 253 123829 618.22 796 777 199.0
B 10 28 872465 5259.16 779 753 165.8
B 0 213 415586 2502.74 779 753 165.8
B 4 206 285916 1720.43 779 753 165.8
C 15 224 7315881 47057.81 559 555 155.5
C 12 254 1633479 10504.22 559 555 155.5
C 15 164 900927 5791.89 559 555 155.5
D 8 176 3659249 17986.22 709 678 203.4
D 10 172 349545 1715.1 709 678 203.4
D 3 12 230130 1128.03 709 678 203.4

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