ASTROSAT CZTI

Data Quality Report

Orbit 20200514_A07_134T03_9000003670_level2

Creation date: 2020-05-17T03:03:08.647535
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/AS1A07_134T03_9000003670cztM0_level2_bc.evt modeM0/AS1A07_134T03_9000003670cztM0_level2_quad_clean.evt
Size (bytes)1,773,233,280529,024,320
Size1.7 GB 504.5 MB
Events in quadrant A8,274,8243,406,075
Events in quadrant B9,077,7903,488,636
Events in quadrant C12,032,8813,316,936
Events in quadrant D21,750,1543,223,207

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0794190
B0831300
C0932120
D01235480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07640
B07640
C07640
D07640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A376905641.496418%
B376907521.995224%
C3769015904.218626%
D3769019515.176439%

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 44686 37692 0 0 0.00% 0.00%
B 44686 37692 6 6 0.01% 0.02%
C 44686 37692 222 222 0.50% 0.59%
D 44686 37692 270 270 0.60% 0.72%

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 11 208 74427 159.38 2129 2089 453.9
A 13 254 46743 98.38 2129 2089 453.9
A 0 226 13313 24.73 2129 2089 453.9
B 3 64 295363 732.43 2162 2118 400.4
B 4 80 218541 540.56 2162 2118 400.4
B 0 190 97206 237.5 2162 2118 400.4
C 7 247 3638019 7541.06 2068 2062 482.2
C 0 239 255867 526.4 2068 2062 482.2
C 2 16 147556 301.76 2068 2062 482.2
D 8 195 9117438 19258.6 2078 2010 473.3
D 1 52 4240312 8954.46 2078 2010 473.3
D 7 238 160107 334.02 2078 2010 473.3

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