ASTROSAT CZTI

Data Quality Report

Orbit 20180815_A04_037T02_9000002310_level2

Creation date: 2018-08-18T11:02:29.741361
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/AS1A04_037T02_9000002310cztM0_level2_bc.evt modeM0/AS1A04_037T02_9000002310cztM0_level2_quad_clean.evt
Size (bytes)2,441,136,960855,449,280
Size2.3 GB 815.8 MB
Events in quadrant A18,709,5565,361,339
Events in quadrant B15,129,9545,489,515
Events in quadrant C14,382,1345,269,097
Events in quadrant D21,081,8295,135,277

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013840
B013840
C013840
D013840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01130
C01130
D01130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01551990
B01441640
C01427010
D01637830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6788315472.278921%
B6788310411.533521%
C6788310811.592446%
D6788318952.791568%

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 79264 67882 168 168 0.21% 0.25%
B 79264 67875 7 7 0.01% 0.01%
C 79264 67876 0 0 0.00% 0.00%
D 79264 67877 194 194 0.24% 0.29%

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 0 253 4094575 5298.69 3605 3544 772.1
A 15 69 491682 632.23 3605 3544 772.1
A 15 157 103818 129.87 3605 3544 772.1
B 0 189 269496 392.31 3641 3549 677.9
B 4 48 214088 310.58 3641 3549 677.9
B 4 216 105731 150.73 3641 3549 677.9
C 3 233 767968 935.42 3503 3481 817.3
C 10 22 53155 60.78 3503 3481 817.3
C 0 207 36736 40.69 3503 3481 817.3
D 12 110 2620537 3204.78 3568 3446 816.6
D 1 52 1868607 2284.0 3568 3446 816.6
D 2 16 485939 590.84 3568 3446 816.6

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