ASTROSAT CZTI

Data Quality Report

Orbit 26458

Creation date: 2024-06-27T19:29:14.705833
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/AS1A09_056T01_9000003824_26458cztM0_level2.evt modeM0/AS1A09_056T01_9000003824_26458cztM0_level2_quad_clean.evt
Size (bytes)621,676,800112,469,760
Size592.9 MB 107.3 MB
Events in quadrant A3,454,749806,474
Events in quadrant B3,252,419818,695
Events in quadrant C3,641,475775,454
Events in quadrant D8,059,112572,657

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143850
B0137330
C0151080
D0281480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6195991.598063%
B6196430.693996%
C61961221.969012%
D6196204933.069722%

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 7485 6196 44 44 0.59% 0.71%
B 7486 6197 2 2 0.03% 0.03%
C 7486 6197 11 11 0.15% 0.18%
D 7485 6195 1928 1928 25.76% 31.12%

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 230451 1395.43 834 820 164.6
A 12 189 10085 56.3 834 820 164.6
A 13 254 9627 53.52 834 820 164.6
B 0 190 29505 189.69 824 806 151.3
B 12 111 17571 110.81 824 806 151.3
B 11 111 15858 99.49 824 806 151.3
C 3 233 261048 1406.7 804 812 185.0
C 14 238 131752 707.79 804 812 185.0
C 2 16 98519 528.15 804 812 185.0
D 1 52 5597246 38104.93 618 605 146.9
D 7 80 34206 228.77 618 605 146.9
D 2 234 21687 143.54 618 605 146.9

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