ASTROSAT CZTI

Data Quality Report

Orbit 42821

Creation date: 2024-06-27T22:44:38.532251
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/AS1C07_001T12_9000005826_42821cztM0_level2.fits modeM0/AS1C07_001T12_9000005826_42821cztM0_level2_quad_clean.evt
Size (bytes)310,158,72089,979,840
Size295.8 MB 85.8 MB
Events in quadrant A2,836,947604,738
Events in quadrant B2,705,621615,947
Events in quadrant C2,624,560596,916
Events in quadrant D2,917,678550,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115602
B0114592
C0109972
D0122272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5083170.334448%
B5083531.042691%
C5083120.236081%
D5083781.534527%

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 7083 5084 8 8 0.11% 0.16%
B 7083 5084 43 43 0.61% 0.85%
C 7083 5084 7 7 0.10% 0.14%
D 7083 5084 69 69 0.97% 1.36%

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 627943 5475.95 558 546 114.6
A 12 189 14741 123.89 558 546 114.6
A 15 237 11587 96.37 558 546 114.6
B 0 190 125236 1182.65 559 545 105.4
B 5 255 115833 1093.46 559 545 105.4
B 0 245 74851 704.76 559 545 105.4
C 15 214 208107 1616.33 556 561 128.4
C 3 233 200702 1558.66 556 561 128.4
C 14 254 21389 162.2 556 561 128.4
D 12 33 246178 1834.76 551 535 133.9
D 1 47 111815 831.17 551 535 133.9
D 1 52 106827 793.92 551 535 133.9

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