ASTROSAT CZTI

Data Quality Report

Orbit 20200507_T03_205T01_9000003652_level2

Creation date: 2020-05-10T11:55:50.133701
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/AS1T03_205T01_9000003652cztM0_level2_bc.evt modeM0/AS1T03_205T01_9000003652cztM0_level2_quad_clean.evt
Size (bytes)3,545,507,5201,859,618,880
Size3.3 GB 1.7 GB
Events in quadrant A20,287,84512,722,872
Events in quadrant B20,986,19912,902,166
Events in quadrant C29,598,03612,225,404
Events in quadrant D30,088,72412,025,879

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019160
B019160
C019160
D019160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01490
B01490
C01490
D01490

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01952830
B01979870
C02263960
D02277840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9420511371.206942%
B9420513531.436229%
C9420535563.774747%
D9420533893.597474%

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 109025 94207 1 1 0.00% 0.00%
B 109025 94208 6 6 0.01% 0.01%
C 109025 94208 302 302 0.28% 0.32%
D 109025 94206 558 558 0.51% 0.59%

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 15 223 419764 378.69 5106 5038 1095.2
A 13 254 142002 125.06 5106 5038 1095.2
A 15 239 108326 94.31 5106 5038 1095.2
B 0 230 210265 211.76 5142 5032 969.2
B 0 189 207184 208.58 5142 5032 969.2
B 4 216 174587 174.95 5142 5032 969.2
C 7 247 10030174 8700.41 4892 4888 1152.3
C 2 16 504795 433.84 4892 4888 1152.3
C 10 218 190099 160.73 4892 4888 1152.3
D 1 52 5613550 4841.76 4995 4839 1158.4
D 7 238 2287133 1970.21 4995 4839 1158.4
D 8 195 1793227 1543.84 4995 4839 1158.4

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