ASTROSAT CZTI

Data Quality Report

Orbit 52917

Creation date: 2025-07-16T22:47:46.512564
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/AS1C09_011T06_9000006484_52917cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52917cztM0_level2_quad_clean.evt
Size (bytes)843,056,64059,189,760
Size804.0 MB 56.4 MB
Events in quadrant A12,859,05382,374
Events in quadrant B3,803,970550,985
Events in quadrant C3,565,112496,922
Events in quadrant D10,556,602279,204

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042704740
B015569491
C014570151
D035779682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01142
B01144
C01142
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5452478987.839325%
B54603386.190476%
C54801803.284672%
D5452268449.229640%

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 6700 5468 4184 4184 62.45% 76.52%
B 6722 5479 207 207 3.08% 3.78%
C 6711 5501 159 159 2.37% 2.89%
D 6702 5473 2671 2671 39.85% 48.80%

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 9 191 11249376 138936.64 320 312 81.0
A 12 17 130632 1609.58 320 312 81.0
A 15 184 39545 484.56 320 312 81.0
B 1 255 434721 3617.65 563 544 120.0
B 5 185 360540 2999.56 563 544 120.0
B 5 172 304601 2533.46 563 544 120.0
C 7 80 898222 5952.44 551 544 150.8
C 13 3 106361 701.67 551 544 150.8
C 1 45 70893 466.48 551 544 150.8
D 15 78 5071064 38047.74 462 441 133.3
D 8 176 2121899 15918.49 462 441 133.3
D 10 172 423701 3175.96 462 441 133.3

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