ASTROSAT CZTI

Data Quality Report

Orbit 20200213_C05_012T03_9000003500_level2

Creation date: 2020-02-17T16:57:59.469224
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/AS1C05_012T03_9000003500cztM0_level2_bc.evt modeM0/AS1C05_012T03_9000003500cztM0_level2_quad_clean.evt
Size (bytes)3,169,690,5601,425,260,160
Size3.0 GB 1.3 GB
Events in quadrant A18,217,0139,354,654
Events in quadrant B20,171,6189,603,676
Events in quadrant C18,271,6879,270,705
Events in quadrant D33,210,4798,784,137

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018320
B018320
C018320
D018320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01844050
B01895750
C01865710
D02407410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A898518410.935994%
B8985211221.248720%
C8985212111.347772%
D8985247115.243066%

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 116299 89846 1 1 0.00% 0.00%
B 116299 89846 95 95 0.08% 0.11%
C 116299 89846 3 3 0.00% 0.00%
D 116299 89844 299 299 0.26% 0.33%

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 13 254 142654 134.92 4714 4638 1023.0
A 0 226 30119 24.91 4714 4638 1023.0
A 12 194 28981 23.8 4714 4638 1023.0
B 14 207 328931 356.48 4805 4690 909.6
B 0 189 221832 238.73 4805 4690 909.6
B 0 183 221828 238.73 4805 4690 909.6
C 7 247 329421 296.06 4612 4595 1097.2
C 3 233 63647 53.82 4612 4595 1097.2
C 14 225 56525 47.33 4612 4595 1097.2
D 13 174 7896192 7288.99 4562 4394 1082.7
D 1 52 5527068 5100.83 4562 4394 1082.7
D 12 233 580107 531.74 4562 4394 1082.7

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