ASTROSAT CZTI

Data Quality Report

Orbit 20191227_A07_062T01_9000003392_level2

Creation date: 2019-12-31T11:12:10.530176
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/AS1A07_062T01_9000003392cztM0_level2_bc.evt modeM0/AS1A07_062T01_9000003392cztM0_level2_quad_clean.evt
Size (bytes)1,959,056,640755,524,800
Size1.8 GB 720.5 MB
Events in quadrant A12,673,6244,852,775
Events in quadrant B12,733,3574,898,262
Events in quadrant C12,569,3264,623,869
Events in quadrant D17,394,8704,527,306

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011840
B011840
C011840
D011840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01207050
B01211570
C01221990
D01371260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A580524350.749328%
B580525580.961207%
C580529801.688142%
D5805211431.968924%

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 69232 58052 9 9 0.01% 0.02%
B 69232 58052 6 6 0.01% 0.01%
C 69232 58052 6 6 0.01% 0.01%
D 69232 58049 157 157 0.23% 0.27%

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 6 16 410736 605.43 3125 3071 673.4
A 13 170 193428 282.7 3125 3071 673.4
A 13 254 92446 132.73 3125 3071 673.4
B 0 189 169646 280.89 3158 3089 593.0
B 0 190 138625 228.58 3158 3089 593.0
B 3 209 136113 224.34 3158 3089 593.0
C 0 10 701267 991.55 2995 2986 704.2
C 0 239 190361 266.07 2995 2986 704.2
C 7 247 112802 155.94 2995 2986 704.2
D 1 52 2496912 3489.26 3061 2958 714.8
D 13 153 849036 1183.74 3061 2958 714.8
D 13 172 531671 739.72 3061 2958 714.8

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