ASTROSAT CZTI

Data Quality Report

Orbit 27968

Creation date: 2024-06-27T19:46:33.653342
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/AS1A10_021T03_9000004038_27968cztM0_level2.evt modeM0/AS1A10_021T03_9000004038_27968cztM0_level2_quad_clean.evt
Size (bytes)226,532,16016,430,400
Size216.0 MB 15.7 MB
Events in quadrant A1,306,55182,158
Events in quadrant B1,337,33081,062
Events in quadrant C1,324,37578,534
Events in quadrant D2,715,66870,354

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052690
B054150
C053150
D099990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A257150.194477%
B257170.272268%
C2572180.699844%
D257232312.558320%

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 2571 2571 0 0 0.00% 0.00%
B 2571 2571 0 0 0.00% 0.00%
C 2572 2572 0 0 0.00% 0.00%
D 2572 2572 265 265 10.30% 10.30%

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 13 254 4970 67.07 338 332 69.2
A 3 137 2941 37.73 338 332 69.2
A 0 226 2910 37.28 338 332 69.2
B 0 190 14037 213.31 332 324 64.3
B 4 52 9344 140.31 332 324 64.3
B 4 200 8658 129.64 332 324 64.3
C 14 238 52911 682.69 325 327 77.0
C 3 233 4180 50.02 325 327 77.0
C 13 61 2201 24.33 325 327 77.0
D 1 52 837733 11077.72 309 303 75.6
D 2 250 225517 2979.18 309 303 75.6
D 8 195 181043 2390.87 309 303 75.6

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