ASTROSAT CZTI

Data Quality Report

Orbit 09188

Creation date: 2024-06-27T15:42:28.251386
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/AS1C02_041T02_9000001282_09188cztM0_level2.evt modeM0/AS1C02_041T02_9000001282_09188cztM0_level2_quad_clean.evt
Size (bytes)464,284,80086,685,120
Size442.8 MB 82.7 MB
Events in quadrant A4,049,758553,372
Events in quadrant B3,161,976561,837
Events in quadrant C2,839,057543,907
Events in quadrant D3,579,969523,913

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01282
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01647214
B01351013
C0128745
D0150439

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6340681.072555%
B6337230.362948%
C634180.126163%
D63401622.555205%

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 7513 6343 12 12 0.16% 0.19%
B 7513 6342 1 1 0.01% 0.02%
C 7513 6343 0 0 0.00% 0.00%
D 7513 6343 161 161 2.14% 2.54%

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 8 5 900687 5838.58 755 739 154.1
A 1 162 116479 750.88 755 739 154.1
A 1 178 25562 161.04 755 739 154.1
B 8 234 45637 305.4 765 748 147.0
B 0 230 38437 256.42 765 748 147.0
B 0 246 22683 149.23 765 748 147.0
C 13 61 5511 28.25 725 728 169.3
C 8 222 4155 20.24 725 728 169.3
C 8 128 3612 17.03 725 728 169.3
D 1 52 626992 3564.9 716 693 175.7
D 7 71 68365 385.19 716 693 175.7
D 1 31 41831 234.16 716 693 175.7

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