ASTROSAT CZTI

Data Quality Report

Orbit 20240410_A13_092T16_9000006178_level2

Creation date: 2024-04-13T13:44:09.398656
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/AS1A13_092T16_9000006178cztM0_level2.fits modeM0/AS1A13_092T16_9000006178cztM0_level2_quad_clean.evt
Size (bytes)283,962,240265,524,480
Size270.8 MB 253.2 MB
Events in quadrant A1,700,9441,595,380
Events in quadrant B1,683,7341,627,748
Events in quadrant C1,590,5981,319,091
Events in quadrant D1,392,5261,269,942

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060290
B0735340
C01217510
D01077320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06560
B06560
C06560
D06560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A324187512.316614%
B324183691.138257%
C32418571017.613671%
D32419378511.675252%

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 36118 32419 0 0 0.00% 0.00%
B 36118 32419 0 0 0.00% 0.00%
C 36117 32399 0 0 0.00% 0.00%
D 36119 32363 0 0 0.00% 0.00%

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 15 236 1383 8.46 443 412 114.7
A 7 110 1374 8.39 443 412 114.7
A 0 29 1365 8.31 443 412 114.7
B 2 9 1567 13.0 442 420 88.3
B 2 8 1263 9.55 442 420 88.3
B 3 17 1193 8.76 442 420 88.3
C 1 81 1257 7.78 420 390 111.4
C 1 80 1227 7.51 420 390 111.4
C 3 202 1223 7.47 420 390 111.4
D 8 176 1198 7.42 399 362 112.7
D 12 6 1065 6.24 399 362 112.7
D 7 3 1041 6.03 399 362 112.7

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