ASTROSAT CZTI

Data Quality Report

Orbit 41948

Creation date: 2024-06-27T22:34:51.765281
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_099T03_9000005720_41948cztM0_level2.fits modeM0/AS1A12_099T03_9000005720_41948cztM0_level2_quad_clean.evt
Size (bytes)197,910,72052,197,120
Size188.7 MB 49.8 MB
Events in quadrant A1,644,222353,840
Events in quadrant B1,533,287357,652
Events in quadrant C1,606,546335,189
Events in quadrant D2,285,256301,392

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069161
B069091
C068651
D091531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A327250.152812%
B3272320.977995%
C327210.030562%
D32721534.676039%

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 3272 3272 2 2 0.06% 0.06%
B 3272 3272 23 23 0.70% 0.70%
C 3272 3272 0 0 0.00% 0.00%
D 3272 3272 151 151 4.61% 4.61%

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 297630 4123.95 346 339 72.1
A 13 254 4304 55.0 346 339 72.1
A 13 6 4148 52.84 346 339 72.1
B 5 255 119951 1743.46 344 335 68.6
B 0 156 29452 424.39 344 335 68.6
B 0 190 19001 272.07 344 335 68.6
C 15 214 145270 1796.73 339 341 80.7
C 9 54 131546 1626.59 339 341 80.7
C 8 128 4106 46.68 339 341 80.7
D 2 249 405429 4957.94 331 321 81.7
D 2 137 304456 3722.18 331 321 81.7
D 12 6 180465 2204.7 331 321 81.7

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