ASTROSAT CZTI

Data Quality Report

Orbit 20180405_G08_038T01_9000002018_level2

Creation date: 2018-04-07T11:23:51.448552
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/AS1G08_038T01_9000002018cztM0_level2_bc.evt modeM0/AS1G08_038T01_9000002018cztM0_level2_quad_clean.evt
Size (bytes)3,437,786,8801,072,172,160
Size3.2 GB 1022.5 MB
Events in quadrant A16,646,0876,480,377
Events in quadrant B20,479,9826,647,892
Events in quadrant C19,249,0957,202,799
Events in quadrant D42,229,4336,594,537

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016540
B016540
C016500
D016520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01675680
B01809190
C01681900
D02630960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01290
B01290
C01290
D01290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A809538911.100639%
B8095615631.930678%
C809516810.841250%
D8092963297.820435%

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 94034 81004 17 17 0.02% 0.02%
B 94034 80998 45 45 0.05% 0.06%
C 94034 80996 0 0 0.00% 0.00%
D 94034 80996 461 461 0.49% 0.57%

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 69 350499 384.74 4179 4102 900.3
A 1 162 133676 143.92 4179 4102 900.3
A 9 143 51341 52.47 4179 4102 900.3
B 0 219 2051347 2551.34 4237 4115 802.4
B 3 64 755842 936.83 4237 4115 802.4
B 0 214 299067 367.58 4237 4115 802.4
C 3 233 2330050 2400.47 4308 4254 968.9
C 0 207 49941 47.15 4308 4254 968.9
C 14 234 39932 36.82 4308 4254 968.9
D 13 122 13173800 13534.58 4136 3981 973.0
D 5 222 8011342 8229.14 4136 3981 973.0
D 8 195 3222384 3307.54 4136 3981 973.0

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