ASTROSAT CZTI

Data Quality Report

Orbit 39817

Creation date: 2024-06-27T22:09:16.647530
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/AS1A12_022T01_9000005498_39817cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39817cztM0_level2_quad_clean.evt
Size (bytes)227,908,80034,485,120
Size217.4 MB 32.9 MB
Events in quadrant A1,646,712283,042
Events in quadrant B1,672,992280,916
Events in quadrant C3,281,06816,089
Events in quadrant D1,616,287262,309

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02576418707
B02736320094
C08431873652
D02470917300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0140
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0740
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A323190.278552%
B3165491.548183%
C1364117385.997067%
D3319320.964146%

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 13403 4352 5 5 0.04% 0.11%
B 13455 4256 19 19 0.14% 0.45%
C 11792 1960 712 712 6.04% 36.33%
D 13430 4477 29 29 0.22% 0.65%

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 10 83 233164 3321.5 336 328 70.1
A 14 235 40409 571.77 336 328 70.1
A 9 143 29450 415.44 336 328 70.1
B 4 171 197016 3048.43 326 318 64.5
B 5 255 43637 671.36 326 318 64.5
B 5 172 33271 510.71 326 318 64.5
C 9 187 2775322 160716.22 66 66 17.3
C 15 208 212279 12289.34 66 66 17.3
C 15 214 28579 1651.2 66 66 17.3
D 2 249 179737 2161.05 335 325 83.0
D 13 249 67814 812.92 335 325 83.0
D 12 0 52213 625.0 335 325 83.0

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