ASTROSAT CZTI

Data Quality Report

Orbit 36868

Creation date: 2024-06-27T21:32:34.186638
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_075T01_9000005244_36868cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36868cztM0_level2_quad_clean.evt
Size (bytes)337,176,00073,889,280
Size321.6 MB 70.5 MB
Events in quadrant A2,715,603624,952
Events in quadrant B783,61710,179
Events in quadrant C3,052,026640,882
Events in quadrant D3,308,609602,822

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113433
B051882
C0122742
D0132392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5084330.649095%
B50845084100.000000%
C50841272.498033%
D50841312.576711%

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 9029 5086 23 23 0.25% 0.45%
B 9028 5083 0 0 0.00% 0.00%
C 9029 5086 96 96 1.06% 1.89%
D 9029 5086 113 113 1.25% 2.22%

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 10 83 229179 1895.22 603 593 120.6
A 13 248 79911 657.63 603 593 120.6
A 9 143 59515 488.53 603 593 120.6
B 12 243 703952 176663.63 11 11 4.0
B 12 144 13155 3298.67 11 11 4.0
B 0 213 8318 2084.76 11 11 4.0
C 0 10 280206 2033.15 596 602 137.5
C 15 214 215216 1560.57 596 602 137.5
C 0 239 106621 770.92 596 602 137.5
D 13 249 311876 2187.7 591 577 142.3
D 2 249 184012 1289.12 591 577 142.3
D 13 171 133363 933.17 591 577 142.3

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