ASTROSAT CZTI

Data Quality Report

Orbit 40928

Creation date: 2024-06-27T22:22:21.882850
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_052T04_9000005582_40928cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40928cztM0_level2_quad_clean.evt
Size (bytes)607,910,40080,015,040
Size579.7 MB 76.3 MB
Events in quadrant A2,908,871642,804
Events in quadrant B2,691,552640,168
Events in quadrant C12,731,832186,158
Events in quadrant D3,732,958559,381

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122393
B0120932
C0416262
D0149512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5629130.230947%
B5629611.083674%
C5629409172.677207%
D56291682.984544%

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 7151 5630 4 4 0.06% 0.07%
B 7151 5630 38 38 0.53% 0.67%
C 7150 5629 3691 3691 51.62% 65.57%
D 7151 5630 145 145 2.03% 2.58%

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 516133 4130.15 615 605 124.8
A 13 254 8129 60.28 615 605 124.8
A 13 248 6780 49.47 615 605 124.8
B 5 255 273406 2312.64 605 589 118.0
B 0 186 19292 158.54 605 589 118.0
B 12 111 14603 118.79 605 589 118.0
C 0 239 11154140 135442.25 349 351 82.4
C 15 214 146967 1780.38 349 351 82.4
C 0 10 66624 804.76 349 351 82.4
D 12 233 358658 2444.92 595 577 146.5
D 13 249 345127 2352.53 595 577 146.5
D 1 47 229929 1565.98 595 577 146.5

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