ASTROSAT CZTI

Data Quality Report

Orbit 41227

Creation date: 2024-06-27T22:26:12.425645
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/AS1T05_102T01_9000005634_41227cztM0_level2.fits modeM0/AS1T05_102T01_9000005634_41227cztM0_level2_quad_clean.evt
Size (bytes)379,532,16079,248,960
Size362.0 MB 75.6 MB
Events in quadrant A5,132,735460,849
Events in quadrant B3,318,231561,225
Events in quadrant C2,658,327546,938
Events in quadrant D2,577,755504,540

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182252
B0128631
C0106091
D0105901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A464994520.326952%
B46492495.355991%
C4649811.742310%
D4649651.398150%

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 6623 4650 916 916 13.83% 19.70%
B 6623 4650 172 172 2.60% 3.70%
C 6623 4650 73 73 1.10% 1.57%
D 6623 4650 66 66 1.00% 1.42%

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 8 2828912 28263.38 490 479 100.1
A 10 83 365499 3647.5 490 479 100.1
A 2 79 33101 325.98 490 479 100.1
B 0 186 723903 7021.01 532 518 103.0
B 5 255 195012 1887.71 532 518 103.0
B 0 190 155896 1508.06 532 518 103.0
C 9 54 312042 2513.14 531 535 124.0
C 15 214 195676 1574.33 531 535 124.0
C 0 10 81717 654.95 531 535 124.0
D 13 249 319117 2431.09 533 520 131.1
D 1 52 78623 595.97 533 520 131.1
D 2 249 50957 384.87 533 520 131.1

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