ASTROSAT CZTI

Data Quality Report

Orbit 38746

Creation date: 2024-06-27T21:55:54.596916
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/AS1A12_054T01_9000005392_38746cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38746cztM0_level2_quad_clean.evt
Size (bytes)390,312,00094,089,600
Size372.2 MB 89.7 MB
Events in quadrant A2,931,264641,787
Events in quadrant B2,754,183647,392
Events in quadrant C2,962,108613,213
Events in quadrant D5,362,653552,813

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122823
B0119442
C0123392
D0197952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5632200.355114%
B5632330.585938%
C5632601.065341%
D56324507.990057%

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 7185 5633 5 5 0.07% 0.09%
B 7185 5633 10 10 0.14% 0.18%
C 7185 5633 42 42 0.58% 0.75%
D 7185 5633 370 370 5.15% 6.57%

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 417923 3193.33 640 626 130.7
A 13 248 15540 114.13 640 626 130.7
A 9 143 13635 99.55 640 626 130.7
B 4 171 120602 956.68 634 615 125.4
B 5 184 65659 518.61 634 615 125.4
B 5 200 43506 341.98 634 615 125.4
C 15 214 250684 1720.17 620 623 145.4
C 0 10 144881 992.35 620 623 145.4
C 15 208 104330 713.4 620 623 145.4
D 12 235 1336785 8940.22 610 592 149.5
D 2 16 783741 5239.9 610 592 149.5
D 2 249 202066 1348.03 610 592 149.5

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