ASTROSAT CZTI

Data Quality Report

Orbit 15778

Creation date: 2024-06-27T17:13:17.550126
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_100T01_9000002336_15778cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15778cztM0_level2_quad_clean.evt
Size (bytes)437,287,680107,521,920
Size417.0 MB 102.5 MB
Events in quadrant A3,112,587693,165
Events in quadrant B3,305,977717,735
Events in quadrant C3,216,678701,166
Events in quadrant D3,153,632678,503

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137903
B0142432
C0139772
D0141372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6688170.254187%
B6688430.642943%
C6688741.106459%
D6688150.224282%

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 7944 6690 0 0 0.00% 0.00%
B 7944 6690 1 1 0.01% 0.01%
C 7944 6690 0 0 0.00% 0.00%
D 7944 6690 4 4 0.05% 0.06%

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 0 226 7176 39.18 805 790 163.0
A 12 194 5866 31.14 805 790 163.0
A 3 137 5180 26.94 805 790 163.0
B 3 209 27520 175.02 817 800 152.7
B 0 189 24787 157.12 817 800 152.7
B 12 111 17455 109.09 817 800 152.7
C 14 238 123963 675.57 785 792 182.3
C 3 233 10451 52.98 785 792 182.3
C 8 128 9504 47.78 785 792 182.3
D 1 52 86097 441.38 781 759 193.3
D 5 51 30678 154.75 781 759 193.3
D 13 172 28647 144.24 781 759 193.3

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