ASTROSAT CZTI

Data Quality Report

Orbit 25744

Creation date: 2024-06-27T19:21:02.156894
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/AS1A09_033T01_9000003750_25744cztM0_level2.evt modeM0/AS1A09_033T01_9000003750_25744cztM0_level2_quad_clean.evt
Size (bytes)843,500,160137,272,320
Size804.4 MB 130.9 MB
Events in quadrant A6,040,846841,506
Events in quadrant B6,308,748842,535
Events in quadrant C6,026,407805,967
Events in quadrant D6,320,752800,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256000
B0264120
C0256070
D0266210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125241090.870329%
B125251531.221557%
C125251541.229541%
D125251160.926148%

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 13814 12524 0 0 0.00% 0.00%
B 13815 12525 24 24 0.17% 0.19%
C 13815 12525 0 0 0.00% 0.00%
D 13815 12525 23 23 0.17% 0.18%

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 17 107441 344.87 1533 1499 307.2
A 13 254 19039 57.1 1533 1499 307.2
A 6 16 16215 47.9 1533 1499 307.2
B 15 222 234886 805.82 1514 1475 289.7
B 0 190 38616 128.22 1514 1475 289.7
B 12 111 36529 121.02 1514 1475 289.7
C 14 238 234150 675.72 1467 1476 344.3
C 3 233 73035 207.82 1467 1476 344.3
C 13 61 9936 24.57 1467 1476 344.3
D 1 52 327400 904.36 1495 1457 360.4
D 8 195 121170 332.16 1495 1457 360.4
D 13 104 72123 196.07 1495 1457 360.4

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