ASTROSAT CZTI

Data Quality Report

Orbit 20160526_G05_246T03_9000000470_level2

Creation date: 2016-09-06T17:49:58.422371
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/AS1G05_246T03_9000000470cztM0_level2_bc.evt modeM0/AS1G05_246T03_9000000470cztM0_level2_quad_clean.evt
Size (bytes)2,168,772,480719,167,680
Size2.0 GB 685.9 MB
Events in quadrant A12,954,2344,389,751
Events in quadrant B15,862,1984,409,670
Events in quadrant C18,233,7884,297,863
Events in quadrant D14,230,9904,260,064

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01341430
B01412040
C01565470
D01378360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013140
B013140
C013140
D013140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A645178211.272533%
B645179021.398081%
C6451732445.028132%
D645179271.436831%

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 74947 64519 4 4 0.01% 0.01%
B 74947 64518 0 0 0.00% 0.00%
C 74947 64518 459 459 0.61% 0.71%
D 74947 64519 36 36 0.05% 0.06%

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 8 15 233323 334.6 3118 3048 688.2
A 3 1 167587 239.08 3118 3048 688.2
A 0 50 156940 223.61 3118 3048 688.2
B 15 204 2536144 4122.59 3160 3063 614.4
B 4 81 433692 700.85 3160 3063 614.4
B 0 229 150897 240.6 3160 3063 614.4
C 2 53 2775102 4093.93 3035 2986 677.1
C 15 208 1673632 2467.25 3035 2986 677.1
C 7 220 1567984 2311.23 3035 2986 677.1
D 1 84 564303 787.31 3110 2988 713.0
D 13 223 556634 776.55 3110 2988 713.0
D 14 34 340408 473.27 3110 2988 713.0

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