ASTROSAT CZTI

Data Quality Report

Orbit 07868

Creation date: 2024-06-27T15:25:02.443519
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/AS1A02_071T01_9000001078_07868cztM0_level2.evt modeM0/AS1A02_071T01_9000001078_07868cztM0_level2_quad_clean.evt
Size (bytes)1,024,441,920176,256,000
Size977.0 MB 168.1 MB
Events in quadrant A7,302,7531,102,652
Events in quadrant B6,898,7151,120,043
Events in quadrant C8,000,2911,102,099
Events in quadrant D7,882,3511,051,858

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02840
B02840
C02840
D02840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310034
B0296843
C0331433
D0326943

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A139232601.867414%
B139232311.659125%
C139232211.587302%
D139232621.881778%

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 16108 13926 35 35 0.22% 0.25%
B 16108 13926 41 41 0.25% 0.29%
C 16108 13926 34 34 0.21% 0.24%
D 16108 13926 114 114 0.71% 0.82%

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 15 239 838026 2513.39 1638 1601 332.8
A 13 248 52820 153.91 1638 1601 332.8
A 13 14 32820 93.81 1638 1601 332.8
B 4 239 242486 761.48 1652 1610 316.3
B 15 204 85054 263.79 1652 1610 316.3
B 4 173 83875 260.06 1652 1610 316.3
C 1 16 1610910 4364.91 1600 1612 368.7
C 8 229 143348 384.43 1600 1612 368.7
C 13 61 12244 28.84 1600 1612 368.7
D 1 52 795825 2036.17 1597 1549 390.1
D 2 152 293120 747.46 1597 1549 390.1
D 13 104 238188 606.64 1597 1549 390.1

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