ASTROSAT CZTI

Data Quality Report

Orbit 37193

Creation date: 2024-06-27T21:36:45.423821
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/AS1A11_079T01_9000005284_37193cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37193cztM0_level2_quad_clean.evt
Size (bytes)692,455,68070,390,080
Size660.4 MB 67.1 MB
Events in quadrant A3,248,141446,321
Events in quadrant B3,034,143449,660
Events in quadrant C7,639,657432,528
Events in quadrant D6,653,439392,551

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134973
B0129092
C0265702
D0238732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5863941.603275%
B5863550.938086%
C58635389.176190%
D5863154026.266417%

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 7145 5864 69 69 0.97% 1.18%
B 7145 5864 32 32 0.45% 0.55%
C 7145 5864 710 710 9.94% 12.11%
D 7145 5864 1471 1471 20.59% 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 10 83 275880 2059.76 660 647 133.6
A 15 237 272811 2036.8 660 647 133.6
A 13 6 96983 720.95 660 647 133.6
B 5 172 103755 810.97 656 638 127.2
B 0 229 80170 625.49 656 638 127.2
B 0 155 67832 528.45 656 638 127.2
C 10 49 4714331 31690.11 637 642 148.7
C 15 214 247703 1660.99 637 642 148.7
C 14 254 101047 675.02 637 642 148.7
D 10 253 3726849 26283.51 580 565 141.8
D 13 249 176712 1242.46 580 565 141.8
D 2 249 138891 975.69 580 565 141.8

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