ASTROSAT CZTI

Data Quality Report

Orbit 11842

Creation date: 2024-06-27T16:19:01.957555
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/AS1A04_088T03_9000001750_11842cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11842cztM0_level2_quad_clean.evt
Size (bytes)484,545,60097,277,760
Size462.1 MB 92.8 MB
Events in quadrant A3,344,347634,565
Events in quadrant B4,497,236619,723
Events in quadrant C3,033,711617,814
Events in quadrant D3,335,437597,944

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143543
B0179132
C0139382
D0148762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6830921.346999%
B68302854.172767%
C6830230.336750%
D6830791.156662%

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 7741 6832 1 1 0.01% 0.01%
B 7741 6832 137 137 1.77% 2.01%
C 7741 6832 0 0 0.00% 0.00%
D 7741 6832 36 36 0.47% 0.53%

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 1 162 84350 508.44 814 798 164.3
A 1 178 43067 257.22 814 798 164.3
A 1 161 37969 226.2 814 798 164.3
B 4 239 573205 3732.05 800 780 153.4
B 15 204 497173 3236.34 800 780 153.4
B 3 64 207753 1349.4 800 780 153.4
C 13 61 5646 27.25 776 779 178.6
C 12 4 4047 18.3 776 779 178.6
C 0 10 2130 7.56 776 779 178.6
D 1 52 281517 1526.19 775 753 184.0
D 9 85 51838 277.69 775 753 184.0
D 13 104 41281 220.3 775 753 184.0

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