ASTROSAT CZTI

Data Quality Report

Orbit 17357

Creation date: 2024-06-27T17:35:26.448270
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_165T12_9000002562_17357cztM0_level2.evt modeM0/AS1A05_165T12_9000002562_17357cztM0_level2_quad_clean.evt
Size (bytes)463,844,16096,923,520
Size442.4 MB 92.4 MB
Events in quadrant A3,072,382641,259
Events in quadrant B3,168,196651,955
Events in quadrant C3,099,893608,441
Events in quadrant D4,264,575579,323

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134032
B0135312
C0133892
D0172172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6514270.414492%
B6514370.568007%
C6514430.660117%
D65142844.359840%

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 7489 6515 0 0 0.00% 0.00%
B 7489 6515 2 2 0.03% 0.03%
C 7489 6515 0 0 0.00% 0.00%
D 7489 6515 225 225 3.00% 3.45%

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 6995 38.77 799 786 160.1
A 3 137 5910 32.0 799 786 160.1
A 12 194 5826 31.47 799 786 160.1
B 12 111 17622 112.19 802 785 150.1
B 11 111 15326 96.89 802 785 150.1
B 0 182 13500 84.73 802 785 150.1
C 14 238 117616 668.71 758 764 174.7
C 3 233 22136 122.31 758 764 174.7
C 13 61 5431 26.71 758 764 174.7
D 13 189 466319 2554.79 751 728 182.2
D 11 176 253095 1384.79 751 728 182.2
D 10 70 238746 1306.05 751 728 182.2

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