ASTROSAT CZTI

Data Quality Report

Orbit 14737

Creation date: 2024-06-27T16:59:17.167041
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/AS1G08_081T01_9000002178_14737cztM0_level2.evt modeM0/AS1G08_081T01_9000002178_14737cztM0_level2_quad_clean.evt
Size (bytes)493,856,640100,903,680
Size471.0 MB 96.2 MB
Events in quadrant A3,510,822655,770
Events in quadrant B3,584,760649,843
Events in quadrant C3,708,706634,443
Events in quadrant D3,683,617635,088

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148803
B0151282
C0153172
D0157362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68981361.971586%
B68981732.507973%
C68981261.826616%
D68981101.594665%

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 9049 6899 0 0 0.00% 0.00%
B 9049 6899 0 0 0.00% 0.00%
C 9049 6899 1 1 0.01% 0.01%
D 9049 6900 8 8 0.09% 0.12%

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 8 15 76031 421.63 883 864 178.3
A 12 189 26860 145.82 883 864 178.3
A 0 226 7718 38.45 883 864 178.3
B 0 189 74337 436.52 877 856 168.3
B 0 229 22531 128.76 877 856 168.3
B 12 111 19525 110.91 877 856 168.3
C 3 233 336510 1693.4 859 864 198.2
C 6 96 10100 46.6 859 864 198.2
C 13 61 6176 26.8 859 864 198.2
D 12 16 381738 1867.26 861 841 204.0
D 2 234 22572 106.53 861 841 204.0
D 2 120 16199 75.29 861 841 204.0

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