ASTROSAT CZTI

Data Quality Report

Orbit 13778

Creation date: 2024-06-27T16:45:58.774892
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_199T01_9000002040_13778cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13778cztM0_level2_quad_clean.evt
Size (bytes)571,397,76080,665,920
Size544.9 MB 76.9 MB
Events in quadrant A3,154,686545,192
Events in quadrant B3,385,846558,807
Events in quadrant C3,128,935538,865
Events in quadrant D7,207,003358,535

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132633
B0139822
C0131462
D0256502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6314250.395946%
B6314630.997783%
C631470.110865%
D6314164626.069053%

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 8820 6317 0 0 0.00% 0.00%
B 8820 6317 9 9 0.10% 0.14%
C 8820 6317 0 0 0.00% 0.00%
D 8820 6316 1585 1585 17.97% 25.09%

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 20066 117.71 807 792 163.7
A 15 69 8310 45.91 807 792 163.7
A 0 226 7440 40.6 807 792 163.7
B 15 33 108466 705.08 813 794 152.7
B 4 80 39942 256.36 813 794 152.7
B 4 173 18890 118.5 813 794 152.7
C 3 233 73889 405.32 783 791 180.3
C 13 61 5714 27.3 783 791 180.3
C 14 220 3127 12.95 783 791 180.3
D 1 3 4117567 26518.81 638 619 155.2
D 5 222 312880 2011.39 638 619 155.2
D 1 52 223391 1434.96 638 619 155.2

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