ASTROSAT CZTI

Data Quality Report

Orbit 41979

Creation date: 2024-06-27T22:35:16.835251
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_104T01_9000005728_41979cztM0_level2.fits modeM0/AS1A12_104T01_9000005728_41979cztM0_level2_quad_clean.evt
Size (bytes)287,585,28086,676,480
Size274.3 MB 82.7 MB
Events in quadrant A2,944,118575,868
Events in quadrant B2,289,023594,378
Events in quadrant C2,375,483570,495
Events in quadrant D2,631,388519,801

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120573
B0104802
C0104432
D0117272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5196290.558122%
B519640.076982%
C519620.038491%
D5196921.770593%

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 7019 5197 31 31 0.44% 0.60%
B 7019 5197 0 0 0.00% 0.00%
C 7019 5197 0 0 0.00% 0.00%
D 7019 5197 84 84 1.20% 1.62%

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 504302 4400.21 554 544 114.5
A 15 223 272407 2374.66 554 544 114.5
A 2 79 20646 175.59 554 544 114.5
B 0 156 74287 689.44 555 540 107.0
B 0 190 23534 214.96 555 540 107.0
B 12 111 13727 123.28 555 540 107.0
C 15 214 230601 1803.47 547 550 127.6
C 8 79 8402 61.56 547 550 127.6
C 7 220 4314 29.51 547 550 127.6
D 12 6 224906 1706.23 538 523 131.5
D 13 249 211867 1607.08 538 523 131.5
D 1 52 48232 362.78 538 523 131.5

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