ASTROSAT CZTI

Data Quality Report

Orbit 26790

Creation date: 2024-06-27T19:32:57.911447
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_079T01_9000003864_26790cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26790cztM0_level2_quad_clean.evt
Size (bytes)528,503,040117,797,760
Size504.0 MB 112.3 MB
Events in quadrant A4,081,278776,703
Events in quadrant B3,497,390805,556
Events in quadrant C3,411,350785,598
Events in quadrant D4,580,368751,683

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165680
B0144510
C0141250
D0180630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6426260.404606%
B6426801.244942%
C6426951.478369%
D64252553.968872%

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 7601 6427 4 4 0.05% 0.06%
B 7601 6427 37 37 0.49% 0.58%
C 7601 6427 22 22 0.29% 0.34%
D 7600 6425 197 197 2.59% 3.07%

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 0 13 945606 5876.57 806 789 160.8
A 6 16 27477 165.99 806 789 160.8
A 13 254 10414 59.87 806 789 160.8
B 3 64 245379 1612.65 813 793 151.7
B 10 246 30668 196.98 813 793 151.7
B 0 229 24114 153.76 813 793 151.7
C 14 238 130869 696.8 803 808 186.7
C 3 233 75661 401.02 803 808 186.7
C 15 208 56866 300.33 803 808 186.7
D 1 52 825218 4420.26 789 773 186.5
D 7 80 379390 2029.95 789 773 186.5
D 15 21 255753 1367.07 789 773 186.5

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