ASTROSAT CZTI

Data Quality Report

Orbit 21199

Creation date: 2024-06-27T18:24:50.376284
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/AS1A06_002T01_9000003134_21199cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21199cztM0_level2_quad_clean.evt
Size (bytes)1,407,522,240252,947,520
Size1.3 GB 241.2 MB
Events in quadrant A10,653,2631,593,044
Events in quadrant B9,570,8791,634,336
Events in quadrant C9,673,0871,574,975
Events in quadrant D11,420,9481,524,468

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0443364
B0404994
C0410854
D0467654

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193755522.849032%
B193753171.636129%
C193754342.240000%
D193754882.518710%

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 21515 19376 204 204 0.95% 1.05%
B 21515 19376 10 10 0.05% 0.05%
C 21515 19375 22 22 0.10% 0.11%
D 21515 19375 231 231 1.07% 1.19%

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 13 252 1100985 2329.34 2336 2280 471.7
A 15 236 385093 811.59 2336 2280 471.7
A 11 47 73698 151.41 2336 2280 471.7
B 0 197 110517 240.66 2342 2284 449.7
B 0 190 61946 132.66 2342 2284 449.7
B 0 182 55238 117.75 2342 2284 449.7
C 3 233 477899 901.52 2246 2260 527.6
C 14 238 349095 657.38 2246 2260 527.6
C 0 207 83422 153.83 2246 2260 527.6
D 1 239 1026430 1853.84 2267 2207 552.5
D 1 52 401670 723.03 2267 2207 552.5
D 7 238 304951 547.97 2267 2207 552.5

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