ASTROSAT CZTI

Data Quality Report

Orbit 20913

Creation date: 2024-06-27T18:21:07.180931
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/AS1C04_001T01_9000003082_20913cztM0_level2.evt modeM0/AS1C04_001T01_9000003082_20913cztM0_level2_quad_clean.evt
Size (bytes)383,725,440113,451,840
Size365.9 MB 108.2 MB
Events in quadrant A2,681,947770,947
Events in quadrant B2,989,319778,824
Events in quadrant C2,736,150752,921
Events in quadrant D2,821,144730,315

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013414
B013416
C013317
D013313

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193
B0191
C0203
D0204

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135371686
B0144261748
C0136541679
D0148592584

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5771270.467857%
B5774530.917908%
C5780490.847751%
D5716280.489853%

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 7748 5862 0 0 0.00% 0.00%
B 7753 5856 15 15 0.19% 0.26%
C 7745 5876 11 11 0.14% 0.19%
D 7753 5790 13 13 0.17% 0.22%

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 6 16 37945 270.18 687 673 137.9
A 0 226 5998 38.6 687 673 137.9
A 3 137 5481 34.85 687 673 137.9
B 7 220 105536 818.4 685 669 128.1
B 0 219 43949 337.77 685 669 128.1
B 0 229 35410 271.13 685 669 128.1
C 14 238 105212 679.58 660 665 153.8
C 9 54 49503 317.46 660 665 153.8
C 7 247 5282 30.01 660 665 153.8
D 1 20 240275 1497.44 658 640 160.0
D 13 174 43104 265.35 658 640 160.0
D 7 38 25544 155.62 658 640 160.0

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