ASTROSAT CZTI

Data Quality Report

Orbit 26797

Creation date: 2024-06-27T19:33:04.323951
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_26797cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26797cztM0_level2_quad_clean.evt
Size (bytes)582,647,040102,225,600
Size555.7 MB 97.5 MB
Events in quadrant A4,202,325656,584
Events in quadrant B3,435,959673,695
Events in quadrant C3,436,204658,539
Events in quadrant D6,096,401618,918

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169050
B0146510
C0146870
D0229020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69941772.530741%
B69951902.716226%
C69952032.902073%
D69956669.521086%

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 7199 6997 23 23 0.32% 0.33%
B 7200 6998 6 6 0.08% 0.09%
C 7200 6998 15 15 0.21% 0.21%
D 7200 6998 441 441 6.12% 6.30%

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 938101 5490.17 846 829 170.7
A 13 254 10576 57.09 846 829 170.7
A 3 137 8116 42.68 846 829 170.7
B 10 246 62311 386.47 840 819 159.1
B 0 229 27777 169.43 840 819 159.1
B 12 111 19366 116.56 840 819 159.1
C 14 238 130945 680.02 821 826 191.3
C 2 16 55526 285.87 821 826 191.3
C 15 208 39880 204.1 821 826 191.3
D 1 52 2448646 12584.12 808 789 194.5
D 2 250 301530 1546.07 808 789 194.5
D 7 80 267036 1368.74 808 789 194.5

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