ASTROSAT CZTI

Data Quality Report

Orbit 20190706_A05_198T01_9000003014_level2

Creation date: 2019-07-08T16:23:21.446127
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_198T01_9000003014cztM0_level2_bc.evt modeM0/AS1A05_198T01_9000003014cztM0_level2_quad_clean.evt
Size (bytes)3,140,925,1201,033,349,760
Size2.9 GB 985.5 MB
Events in quadrant A17,653,4506,632,871
Events in quadrant B19,109,0236,702,206
Events in quadrant C16,151,2886,421,350
Events in quadrant D36,815,3866,114,376

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016140
B016140
C016140
D016140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01689840
B01755860
C01655580
D02361260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01270
B01270
C01270
D01270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7916912451.572585%
B7916917112.161199%
C7916912951.635741%
D7916975789.571928%

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 91919 79173 36 36 0.04% 0.05%
B 91919 79167 22 22 0.02% 0.03%
C 91919 79171 0 0 0.00% 0.00%
D 91919 79168 1783 1783 1.94% 2.25%

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 12 96 1062638 1153.32 4251 4165 917.8
A 5 16 132465 139.8 4251 4165 917.8
A 13 254 64026 65.23 4251 4165 917.8
B 7 220 975534 1215.39 4269 4157 799.2
B 0 189 806743 1004.2 4269 4157 799.2
B 10 245 213433 261.85 4269 4157 799.2
C 9 221 150833 152.18 4118 4099 964.2
C 7 220 43085 40.43 4118 4099 964.2
C 0 207 37475 34.61 4118 4099 964.2
D 1 52 19778249 21074.85 4058 3917 938.3
D 13 153 523026 553.25 4058 3917 938.3
D 2 234 296249 311.56 4058 3917 938.3

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