ASTROSAT CZTI

Data Quality Report

Orbit 20956

Creation date: 2024-06-27T18:21:38.366577
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/AS1A05_088T05_9000003088_20956cztM0_level2.evt modeM0/AS1A05_088T05_9000003088_20956cztM0_level2_quad_clean.evt
Size (bytes)461,327,04079,729,920
Size440.0 MB 76.0 MB
Events in quadrant A3,151,317504,413
Events in quadrant B3,476,885509,187
Events in quadrant C3,242,098480,353
Events in quadrant D3,660,291467,838

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134424
B0145057
C0137005
D0152742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6494390.600554%
B6492751.155268%
C64921081.663586%
D64941251.924854%

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 7630 6496 14 14 0.18% 0.22%
B 7630 6495 12 12 0.16% 0.18%
C 7629 6494 31 31 0.41% 0.48%
D 7629 6495 94 94 1.23% 1.45%

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 5 16 60335 369.98 803 787 160.9
A 0 226 7145 39.5 803 787 160.9
A 3 137 6329 34.43 803 787 160.9
B 7 220 198898 1292.18 806 787 153.3
B 3 64 55322 355.7 806 787 153.3
B 0 190 27363 173.34 806 787 153.3
C 9 54 122448 678.18 769 774 179.4
C 14 238 120583 667.79 769 774 179.4
C 13 61 5337 25.43 769 774 179.4
D 7 238 272734 1465.07 773 751 185.6
D 1 52 239175 1284.3 773 751 185.6
D 1 239 103349 552.66 773 751 185.6

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