ASTROSAT CZTI

Data Quality Report

Orbit 22332

Creation date: 2024-06-27T18:39:32.564357
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/AS1A07_149T01_9000003304_22332cztM0_level2.evt modeM0/AS1A07_149T01_9000003304_22332cztM0_level2_quad_clean.evt
Size (bytes)452,813,760112,374,720
Size431.8 MB 107.2 MB
Events in quadrant A3,146,618745,357
Events in quadrant B3,251,361776,151
Events in quadrant C3,247,298725,833
Events in quadrant D3,621,128697,318

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136782
B0138592
C0137742
D0153762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6572150.228241%
B6572220.334753%
C6572510.776019%
D6571310.471770%

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 7812 6573 1 1 0.01% 0.02%
B 7812 6573 2 2 0.03% 0.03%
C 7812 6573 2 2 0.03% 0.03%
D 7811 6572 22 22 0.28% 0.33%

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 13 254 8780 48.96 813 800 163.0
A 4 2 7151 38.96 813 800 163.0
A 0 226 7101 38.66 813 800 163.0
B 12 111 18274 113.91 825 806 153.3
B 11 111 15755 97.49 825 806 153.3
B 14 111 14222 87.49 825 806 153.3
C 14 238 127513 692.04 790 794 183.1
C 0 10 19382 101.51 790 794 183.1
C 3 9 11810 60.16 790 794 183.1
D 13 174 326756 1706.75 784 760 191.0
D 1 52 193774 1010.52 784 760 191.0
D 7 223 67697 350.45 784 760 191.0

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