ASTROSAT CZTI

Data Quality Report

Orbit 04944

Creation date: 2024-06-27T14:49:09.357364
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/AS1G05_157T01_9000000626_04944cztM0_level2.evt modeM0/AS1G05_157T01_9000000626_04944cztM0_level2_quad_clean.evt
Size (bytes)1,011,968,640115,591,680
Size965.1 MB 110.2 MB
Events in quadrant A11,106,925593,853
Events in quadrant B5,922,828701,927
Events in quadrant C5,179,965709,826
Events in quadrant D7,626,575664,336

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0415403
B0255902
C0242782
D0311502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11988249220.787454%
B119881281.067734%
C11988750.625626%
D119883783.153153%

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 13528 11988 2235 2235 16.52% 18.64%
B 13528 11988 45 45 0.33% 0.38%
C 13528 11988 0 0 0.00% 0.00%
D 13528 11988 265 265 1.96% 2.21%

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 0 31 6454905 27052.11 1173 1146 238.6
A 0 50 87525 362.07 1173 1146 238.6
A 15 31 19730 77.9 1173 1146 238.6
B 10 16 435025 1662.96 1371 1339 260.8
B 15 204 75451 284.18 1371 1339 260.8
B 0 219 57619 215.8 1371 1339 260.8
C 13 61 10829 31.18 1321 1325 304.8
C 1 16 9588 27.11 1321 1325 304.8
C 14 67 6460 16.85 1321 1325 304.8
D 2 33 594770 1848.27 1305 1263 321.1
D 12 233 407273 1264.37 1305 1263 321.1
D 7 67 354935 1101.39 1305 1263 321.1

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