ASTROSAT CZTI

Data Quality Report

Orbit 38881

Creation date: 2024-06-27T21:57:37.162468
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_011T42_9000005412_38881cztM0_level2.fits modeM0/AS1A12_011T42_9000005412_38881cztM0_level2_quad_clean.evt
Size (bytes)227,836,80054,875,520
Size217.3 MB 52.3 MB
Events in quadrant A1,690,523390,960
Events in quadrant B1,639,906396,086
Events in quadrant C1,541,715381,404
Events in quadrant D3,328,323281,366

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068452
B067341
C064011
D0118571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2975160.537815%
B2975531.781513%
C297540.134454%
D297567722.756303%

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 5007 2976 8 8 0.16% 0.27%
B 5007 2976 33 33 0.66% 1.11%
C 5007 2976 3 3 0.06% 0.10%
D 5007 2976 651 651 13.00% 21.88%

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 222235 2969.58 366 359 74.7
A 13 248 37853 501.82 366 359 74.7
A 13 6 9557 123.11 366 359 74.7
B 4 171 174887 2445.51 364 355 71.4
B 0 230 14250 194.69 364 355 71.4
B 12 111 8578 115.22 364 355 71.4
C 15 214 121239 1432.27 360 362 84.4
C 0 10 8396 95.19 360 362 84.4
C 14 254 2919 30.3 360 362 84.4
D 12 227 1704857 22531.5 303 295 75.7
D 5 222 263063 3473.36 303 295 75.7
D 2 249 72560 955.22 303 295 75.7

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