ASTROSAT CZTI

Data Quality Report

Orbit 20181213_A05_165T12_9000002562_level2

Creation date: 2018-12-14T18:00:37.066334
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/AS1A05_165T12_9000002562cztM0_level2_bc.evt modeM0/AS1A05_165T12_9000002562cztM0_level2_quad_clean.evt
Size (bytes)3,325,409,2801,310,045,760
Size3.1 GB 1.2 GB
Events in quadrant A20,463,5558,392,686
Events in quadrant B21,061,2988,507,146
Events in quadrant C20,056,2868,020,740
Events in quadrant D32,211,8447,803,896

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01490
B01490
C01490
D01490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020640
B020640
C020640
D020640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02090930
B02107820
C02095780
D02512770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1015087970.785160%
B1015089990.984159%
C10150812871.267880%
D10150825822.543642%

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 116318 101508 1 1 0.00% 0.00%
B 116318 101507 2 2 0.00% 0.00%
C 116318 101508 0 0 0.00% 0.00%
D 116318 101507 260 260 0.22% 0.26%

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 15 191 38117 28.46 5320 5219 1156.0
A 0 226 35561 26.25 5320 5219 1156.0
A 12 194 33786 24.71 5320 5219 1156.0
B 4 216 154820 149.79 5368 5236 998.6
B 0 229 121288 116.21 5368 5236 998.6
B 4 173 82408 77.28 5368 5236 998.6
C 3 233 387027 324.42 5091 5064 1177.4
C 8 128 30986 22.02 5091 5064 1177.4
C 13 61 29848 21.05 5091 5064 1177.4
D 5 222 4501875 3781.74 5153 4972 1189.1
D 13 232 2604350 2185.99 5153 4972 1189.1
D 13 189 1562676 1309.97 5153 4972 1189.1

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