ASTROSAT CZTI

Data Quality Report

Orbit 19662

Creation date: 2024-06-27T18:05:21.750791
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/AS1T03_005T01_9000002928_19662cztM0_level2.evt modeM0/AS1T03_005T01_9000002928_19662cztM0_level2_quad_clean.evt
Size (bytes)833,512,320167,699,520
Size794.9 MB 159.9 MB
Events in quadrant A6,016,5431,070,078
Events in quadrant B6,221,2211,084,983
Events in quadrant C6,045,8691,030,505
Events in quadrant D6,097,1431,014,573

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264062
B0268052
C0262532
D0269812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127202932.303459%
B127193252.555232%
C127203262.562893%
D127202461.933962%

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 13075 12720 3 3 0.02% 0.02%
B 13074 12721 24 24 0.18% 0.19%
C 13075 12721 0 0 0.00% 0.00%
D 13075 12720 62 62 0.47% 0.49%

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 13 252 56947 179.86 1532 1501 308.3
A 11 29 37224 115.88 1532 1501 308.3
A 9 143 29125 89.61 1532 1501 308.3
B 7 220 118394 398.79 1521 1478 293.2
B 10 247 41222 135.56 1521 1478 293.2
B 12 111 36299 118.77 1521 1478 293.2
C 14 238 226354 651.11 1466 1474 345.4
C 3 233 41651 116.33 1466 1474 345.4
C 9 221 40376 112.64 1466 1474 345.4
D 1 52 184983 508.89 1487 1445 360.7
D 1 20 128306 351.74 1487 1445 360.7
D 2 16 102417 279.96 1487 1445 360.7

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