ASTROSAT CZTI

Data Quality Report

Orbit 40777

Creation date: 2024-06-27T22:20:20.735175
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_095T02_9000005568_40777cztM0_level2.fits modeM0/AS1A12_095T02_9000005568_40777cztM0_level2_quad_clean.evt
Size (bytes)245,531,52054,829,440
Size234.2 MB 52.3 MB
Events in quadrant A1,790,161379,188
Events in quadrant B1,833,172390,954
Events in quadrant C2,795,240352,515
Events in quadrant D2,413,656304,418

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073772
B075191
C0103131
D094081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A327760.183094%
B3277651.983522%
C32773009.154715%
D327746614.220323%

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 5160 3278 4 4 0.08% 0.12%
B 5160 3278 42 42 0.81% 1.28%
C 5160 3278 314 314 6.09% 9.58%
D 5159 3277 123 123 2.38% 3.75%

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 272260 3517.99 369 361 77.3
A 2 79 42771 548.73 369 361 77.3
A 12 189 28618 365.61 369 361 77.3
B 5 255 150931 2052.17 371 359 73.4
B 0 229 144148 1959.72 371 359 73.4
B 0 190 25502 342.68 371 359 73.4
C 9 187 1124599 13429.19 355 357 83.7
C 0 10 137198 1634.58 355 357 83.7
C 15 214 136143 1621.98 355 357 83.7
D 12 227 641379 7607.99 336 326 84.3
D 1 47 180411 2137.24 336 326 84.3
D 12 191 103580 1225.41 336 326 84.3

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