ASTROSAT CZTI

Data Quality Report

Orbit 20200606_A09_104T01_9000003710_level2

Creation date: 2021-01-10T19:21:05.032486
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/AS1A09_104T01_9000003710cztM0_level2_bc.evt modeM0/AS1A09_104T01_9000003710cztM0_level2_quad_clean.evt
Size (bytes)3,499,217,2801,275,007,680
Size3.3 GB 1.2 GB
Events in quadrant A22,469,4618,294,460
Events in quadrant B20,484,3258,314,347
Events in quadrant C19,880,0227,906,016
Events in quadrant D36,801,2997,726,276

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018980
B018980
C018980
D018980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02007930
B01956650
C01959570
D02588740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9305611091.191756%
B9305613651.466859%
C9305617801.912827%
D9305656946.118896%

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 106181 93049 15 15 0.01% 0.02%
B 106181 93051 0 0 0.00% 0.00%
C 106181 93050 18 18 0.02% 0.02%
D 106181 93049 269 269 0.25% 0.29%

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 1827057 1633.04 5184 5102 1115.7
A 15 173 294607 259.49 5184 5102 1115.7
A 3 1 294368 259.27 5184 5102 1115.7
B 0 190 205877 207.52 5171 5050 967.8
B 0 229 171082 171.56 5171 5050 967.8
B 3 112 153336 153.23 5171 5050 967.8
C 7 87 663229 574.92 4895 4888 1145.1
C 3 233 128277 107.75 4895 4888 1145.1
C 9 54 124290 104.27 4895 4888 1145.1
D 7 238 8906658 7804.61 4947 4785 1140.6
D 8 195 6143036 5381.64 4947 4785 1140.6
D 1 52 1398726 1222.12 4947 4785 1140.6

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