ASTROSAT CZTI

Data Quality Report

Orbit 35653

Creation date: 2022-05-03T10:50:56.677572
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/AS1C07_001T07_9000005104_35653cztM0_level2.evt modeM0/AS1C07_001T07_9000005104_35653cztM0_level2_quad_clean.evt
Size (bytes)639,109,44091,825,920
Size609.5 MB 87.6 MB
Events in quadrant A9,208,698489,353
Events in quadrant B3,431,723643,285
Events in quadrant C3,005,595679,701
Events in quadrant D3,378,139623,454

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307513
B0133542
C0119182
D0134082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4907239148.726309%
B49073667.458732%
C49071573.199511%
D49073316.745466%

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 7029 4908 2467 2467 35.10% 50.26%
B 7029 4908 274 274 3.90% 5.58%
C 7029 4908 118 118 1.68% 2.40%
D 7029 4908 262 262 3.73% 5.34%

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 15 169 7244474 76555.86 472 464 94.6
A 10 83 107720 1133.5 472 464 94.6
A 13 6 13415 136.87 472 464 94.6
B 5 172 1069814 10120.29 573 560 105.7
B 4 232 68159 639.81 573 560 105.7
B 3 112 16664 152.42 573 560 105.7
C 0 10 375103 2766.98 589 593 135.3
C 15 214 203075 1495.99 589 593 135.3
C 1 23 75415 552.81 589 593 135.3
D 10 118 717588 5212.97 569 555 137.5
D 2 249 109657 793.19 569 555 137.5
D 8 195 99825 721.71 569 555 137.5

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