ASTROSAT CZTI

Data Quality Report

Orbit 20170415_A03_036T01_9000001164_level2

Creation date: 2017-09-23T17:26:52.774221
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/AS1A03_036T01_9000001164cztM0_level2.evt modeM0/AS1A03_036T01_9000001164cztM0_level2_quad_clean.evt
Size (bytes)4,089,631,680789,560,640
Size3.8 GB 753.0 MB
Events in quadrant A30,847,7395,014,266
Events in quadrant B28,709,0675,196,610
Events in quadrant C26,493,5345,011,462
Events in quadrant D33,955,6974,779,870

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300640
B01221370
C01182610
D01395490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011640
B011620
C011640
D011640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5703823954.198955%
B570389941.742698%
C570395871.029120%
D5703521813.823968%

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 66168 57053 1180 1180 1.78% 2.07%
B 66168 57055 71 71 0.11% 0.12%
C 66168 57055 39 39 0.06% 0.07%
D 66168 57054 1347 1347 2.04% 2.36%

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 15 236 2047596 1495.32 6804 6665 1364.9
A 15 239 1666148 1215.85 6804 6665 1364.9
A 14 111 845956 614.92 6804 6665 1364.9
B 0 214 623651 478.33 6930 6773 1289.7
B 4 81 256401 193.56 6930 6773 1289.7
B 4 173 238699 179.84 6930 6773 1289.7
C 1 16 408847 262.19 6685 6710 1533.8
C 13 61 51297 29.07 6685 6710 1533.8
C 12 4 25454 12.22 6685 6710 1533.8
D 12 233 5199855 3006.7 6591 6450 1727.3
D 2 152 928518 533.83 6591 6450 1727.3
D 7 71 793636 455.74 6591 6450 1727.3

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