ASTROSAT CZTI

Data Quality Report

Orbit 53435

Creation date: 2025-10-15T18:53:06.935426
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/AS1A14_002T06_9000006496_53435cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53435cztM0_level2_quad_clean.evt
Size (bytes)1,081,500,480134,452,800
Size1.0 GB 128.2 MB
Events in quadrant A9,380,581883,922
Events in quadrant B7,452,1181,030,473
Events in quadrant C16,263,700568,492
Events in quadrant D6,123,047858,312

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352931
B0293911
C0555781
D0258261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10527130212.368196%
B105275465.186663%
C10527427740.628859%
D105273002.849815%

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 10877 10528 1093 1093 10.05% 10.38%
B 10877 10528 285 285 2.62% 2.71%
C 10877 10528 4083 4083 37.54% 38.78%
D 10877 10528 229 229 2.11% 2.18%

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 15 174 3594882 13744.68 1063 1038 261.5
A 3 63 845671 3230.3 1063 1038 261.5
A 0 8 262162 998.67 1063 1038 261.5
B 10 254 1029477 4365.06 1095 1058 235.6
B 4 171 753713 3194.6 1095 1058 235.6
B 4 206 398731 1687.9 1095 1058 235.6
C 1 241 8726050 38267.83 831 824 228.0
C 15 224 2561102 11229.08 831 824 228.0
C 9 38 711271 3115.94 831 824 228.0
D 2 252 499684 1645.33 1067 1020 303.1
D 2 120 353413 1162.71 1067 1020 303.1
D 2 153 166785 546.94 1067 1020 303.1

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