ASTROSAT CZTI

Data Quality Report

Orbit 20200614_C05_012T07_9000003718_level2

Creation date: 2021-01-10T14:26:01.622406
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1C05_012T07_9000003718cztM0_level2_bc.evt modeM0/AS1C05_012T07_9000003718cztM0_level2_quad_clean.evt
Size (bytes)3,168,918,7201,623,418,560
Size3.0 GB 1.5 GB
Events in quadrant A17,446,21311,186,731
Events in quadrant B20,497,15511,201,547
Events in quadrant C16,708,69010,743,067
Events in quadrant D35,675,51910,365,366

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01470
B01470
C01470
D01470

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01697280
B01814980
C01703590
D02297530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016860
B016860
C016860
D016860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A828837600.916955%
B8288319002.292388%
C8288312681.529867%
D8288334664.181798%

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 97418 82887 0 0 0.00% 0.00%
B 97418 82883 74 74 0.08% 0.09%
C 97418 82883 0 0 0.00% 0.00%
D 97418 82881 618 618 0.63% 0.75%

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 13 254 124040 123.19 4500 4431 970.9
A 13 220 41536 38.22 4500 4431 970.9
A 3 1 33932 30.38 4500 4431 970.9
B 3 64 2073201 2452.53 4479 4380 843.5
B 0 229 384025 450.06 4479 4380 843.5
B 3 112 262135 305.56 4479 4380 843.5
C 2 16 73275 68.39 4285 4276 1008.9
C 3 233 72156 67.28 4285 4276 1008.9
C 7 87 57174 52.43 4285 4276 1008.9
D 1 52 11326294 11096.12 4342 4204 1020.4
D 8 195 5019673 4915.37 4342 4204 1020.4
D 2 244 944746 921.77 4342 4204 1020.4

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