ASTROSAT CZTI

Data Quality Report

Orbit 37753

Creation date: 2024-06-27T21:43:59.394266
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/AS1A11_106T02_9000005344_37753cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37753cztM0_level2_quad_clean.evt
Size (bytes)537,114,24053,501,760
Size512.2 MB 51.0 MB
Events in quadrant A5,617,771292,123
Events in quadrant B2,797,971331,437
Events in quadrant C2,968,565333,823
Events in quadrant D4,526,642294,526

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201373
B0113672
C0117342
D0169212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5247128524.490185%
B5247340.647989%
C5247380.724223%
D52475099.700781%

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 7370 5248 1217 1217 16.51% 23.19%
B 7370 5248 19 19 0.26% 0.36%
C 7370 5248 34 34 0.46% 0.65%
D 7370 5248 499 499 6.77% 9.51%

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 15 222 2738104 24489.05 555 545 111.8
A 10 83 271456 2423.46 555 545 111.8
A 12 227 232150 2071.84 555 545 111.8
B 4 81 63538 524.32 648 633 120.0
B 0 230 45320 372.47 648 633 120.0
B 0 229 42467 348.69 648 633 120.0
C 15 214 225166 1535.67 638 644 146.2
C 0 10 174628 1190.0 638 644 146.2
C 14 254 34301 230.2 638 644 146.2
D 13 249 1007523 6765.03 619 604 148.8
D 2 249 386722 2594.15 619 604 148.8
D 2 250 205626 1377.45 619 604 148.8

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