ASTROSAT CZTI

Data Quality Report

Orbit 33948

Creation date: 2024-06-27T20:54:35.782617
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_068T02_9000004850_33948cztM0_level2.evt modeM0/AS1A11_068T02_9000004850_33948cztM0_level2_quad_clean.evt
Size (bytes)540,080,64070,073,280
Size515.1 MB 66.8 MB
Events in quadrant A2,551,563447,766
Events in quadrant B4,007,011446,201
Events in quadrant C5,055,195433,127
Events in quadrant D4,374,460414,249

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110233
B0154162
C0190852
D0166762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A543750.091962%
B543754810.079088%
C54373526.474159%
D54373095.683281%

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 7049 5438 0 0 0.00% 0.00%
B 7049 5438 419 419 5.94% 7.71%
C 7049 5438 247 247 3.50% 4.54%
D 7049 5438 237 237 3.36% 4.36%

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 15657 113.72 654 641 132.0
A 13 254 9989 70.79 654 641 132.0
A 13 6 6757 46.32 654 641 132.0
B 0 182 967506 7992.25 631 615 121.0
B 5 172 422597 3488.07 631 615 121.0
B 0 229 29107 235.51 631 615 121.0
C 3 233 1922954 13336.77 618 623 144.1
C 0 10 376586 2608.36 618 623 144.1
C 15 214 230812 1597.01 618 623 144.1
D 8 195 579491 3574.24 620 606 162.0
D 12 6 449863 2773.87 620 606 162.0
D 13 249 330898 2039.34 620 606 162.0

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