ASTROSAT CZTI

Data Quality Report

Orbit 26971

Creation date: 2024-06-27T19:35:06.940036
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/AS1C05_019T03_9000003898_26971cztM0_level2.evt modeM0/AS1C05_019T03_9000003898_26971cztM0_level2_quad_clean.evt
Size (bytes)772,761,600117,774,720
Size737.0 MB 112.3 MB
Events in quadrant A12,327,339533,243
Events in quadrant B3,259,099882,919
Events in quadrant C3,233,042849,003
Events in quadrant D4,117,665820,625

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413700
B0142440
C0142480
D0170520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6871443364.517537%
B68711592.314074%
C68711472.139427%
D68712984.337069%

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 7035 6870 3551 3551 50.48% 51.69%
B 7036 6873 6 6 0.09% 0.09%
C 7036 6872 2 2 0.03% 0.03%
D 7036 6872 153 153 2.17% 2.23%

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 14 235 9973425 90697.12 542 530 110.0
A 6 16 204639 1856.24 542 530 110.0
A 0 13 44925 403.74 542 530 110.0
B 0 230 30036 187.66 815 793 155.8
B 12 111 19219 118.25 815 793 155.8
B 11 111 17145 104.94 815 793 155.8
C 14 238 125791 676.05 784 786 184.9
C 2 16 30433 160.34 784 786 184.9
C 15 208 23266 121.58 784 786 184.9
D 2 250 336612 1794.77 787 763 187.1
D 12 1 289059 1540.64 787 763 187.1
D 11 176 221126 1177.61 787 763 187.1

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