ASTROSAT CZTI

Data Quality Report

Orbit 20180312_G08_031T03_9000001972_level2

Creation date: 2018-07-02T17:14:53.033229
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_031T03_9000001972cztM0_level2_bc.evt modeM0/AS1G08_031T03_9000001972cztM0_level2_quad_clean.evt
Size (bytes)1,095,969,600314,441,280
Size1.0 GB 299.9 MB
Events in quadrant A12,465,9651,956,134
Events in quadrant B6,025,4552,045,024
Events in quadrant C4,805,2382,017,307
Events in quadrant D8,311,7051,910,362

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800390
B0532430
C0481740
D0603800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04740
B04740
C04740
D04740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23169319213.777030%
B231697393.189607%
C231691990.858906%
D231699754.208209%

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 28295 23173 219 219 0.77% 0.95%
B 28295 23169 72 72 0.25% 0.31%
C 28295 23171 0 0 0.00% 0.00%
D 28295 23169 277 277 0.98% 1.20%

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 15 239 7672086 30167.4 1163 1142 254.3
A 8 15 139958 545.92 1163 1142 254.3
A 4 2 77968 302.13 1163 1142 254.3
B 4 239 773391 3381.81 1208 1175 228.3
B 3 64 321257 1401.75 1208 1175 228.3
B 0 214 85130 367.67 1208 1175 228.3
C 15 208 58407 215.41 1196 1179 265.7
C 6 96 29002 104.73 1196 1179 265.7
C 7 236 20828 73.96 1196 1179 265.7
D 5 222 2113437 7757.47 1185 1143 272.3
D 1 52 1505844 5526.07 1185 1143 272.3
D 2 234 77917 281.96 1185 1143 272.3

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