ASTROSAT CZTI

Data Quality Report

Orbit 31433

Creation date: 2024-06-27T20:28:16.981636
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/AS1A10_094T25_9000004576_31433cztM0_level2.evt modeM0/AS1A10_094T25_9000004576_31433cztM0_level2_quad_clean.evt
Size (bytes)480,839,04089,758,080
Size458.6 MB 85.6 MB
Events in quadrant A2,282,324624,151
Events in quadrant B5,252,143551,606
Events in quadrant C2,528,040609,504
Events in quadrant D4,168,087589,581

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100131
B0192311
C0106671
D0159081

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4894861.757254%
B489498020.024520%
C48941533.126277%
D48941984.045770%

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 5334 4894 0 0 0.00% 0.00%
B 5334 4894 704 704 13.20% 14.38%
C 5334 4894 1 1 0.02% 0.02%
D 5334 4894 101 101 1.89% 2.06%

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 10585 83.83 589 575 119.4
A 3 137 6252 47.54 589 575 119.4
A 0 226 4974 36.84 589 575 119.4
B 12 1 1769749 17264.01 527 513 102.5
B 6 159 1250940 12201.53 527 513 102.5
B 5 172 45182 435.88 527 513 102.5
C 3 233 170460 1274.57 565 569 133.3
C 14 238 107070 799.0 565 569 133.3
C 14 254 24150 176.91 565 569 133.3
D 1 52 729494 5410.16 568 550 134.7
D 12 218 542090 4019.26 568 550 134.7
D 8 195 438358 3249.37 568 550 134.7

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