ASTROSAT CZTI

Data Quality Report

Orbit 31593

Creation date: 2024-06-27T20:30:27.450412
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/AS1C06_002T03_9000004610_31593cztM0_level2.evt modeM0/AS1C06_002T03_9000004610_31593cztM0_level2_quad_clean.evt
Size (bytes)2,451,214,080479,070,720
Size2.3 GB 456.9 MB
Events in quadrant A11,954,4263,318,961
Events in quadrant B23,603,6883,200,845
Events in quadrant C13,744,5893,163,173
Events in quadrant D23,190,5313,044,470

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0529806
B0889926
C0570356
D0871976

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05280
B05280
C05280
D05280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A259274291.654646%
B2592717536.761291%
C259277522.900451%
D2592714055.419061%

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 28227 25927 0 0 0.00% 0.00%
B 28227 25927 824 824 2.92% 3.18%
C 28227 25927 28 28 0.10% 0.11%
D 28227 25927 1019 1019 3.61% 3.93%

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 49995 76.26 3095 3026 615.9
A 3 137 31309 45.92 3095 3026 615.9
A 0 226 26273 37.74 3095 3026 615.9
B 6 159 7214556 12870.79 3003 2933 560.3
B 5 172 1879303 3348.81 3003 2933 560.3
B 4 80 1569013 2795.03 3003 2933 560.3
C 3 233 1205828 1750.3 2953 2963 687.2
C 14 238 532081 769.93 2953 2963 687.2
C 4 175 127781 181.62 2953 2963 687.2
D 8 195 7463817 10533.86 2951 2865 708.3
D 12 218 2318098 3268.8 2951 2865 708.3
D 13 249 603922 848.61 2951 2865 708.3

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