ASTROSAT CZTI

Data Quality Report

Orbit 18614

Creation date: 2024-06-27T17:52:18.803729
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/AS1A05_082T10_9000002774_18614cztM0_level2.evt modeM0/AS1A05_082T10_9000002774_18614cztM0_level2_quad_clean.evt
Size (bytes)489,415,68097,637,760
Size466.7 MB 93.1 MB
Events in quadrant A3,666,095625,553
Events in quadrant B3,359,210653,572
Events in quadrant C3,420,540640,430
Events in quadrant D3,965,455614,395

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150362
B0138992
C0141032
D0158832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60561161.915456%
B6056631.040291%
C60571001.650982%
D60561071.766843%

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 7446 6057 44 44 0.59% 0.73%
B 7446 6057 0 0 0.00% 0.00%
C 7447 6058 0 0 0.00% 0.00%
D 7446 6057 65 65 0.87% 1.07%

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 13 439061 2605.65 837 825 168.2
A 13 254 10484 57.43 837 825 168.2
A 0 226 7301 38.5 837 825 168.2
B 12 111 18005 108.68 848 830 158.0
B 4 173 17299 104.21 848 830 158.0
B 11 111 15701 94.1 848 830 158.0
C 14 238 132838 690.06 833 843 191.3
C 3 233 24844 125.48 833 843 191.3
C 9 54 18022 89.81 833 843 191.3
D 5 222 368748 1838.38 835 813 200.1
D 1 52 332863 1659.08 835 813 200.1
D 7 96 54551 268.5 835 813 200.1

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