ASTROSAT CZTI

Data Quality Report

Orbit 20170526_A03_107T01_9000001246_level2

Creation date: 2017-09-24T00:48:09.230682
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/AS1A03_107T01_9000001246cztM0_level2.evt modeM0/AS1A03_107T01_9000001246cztM0_level2_quad_clean.evt
Size (bytes)2,232,815,040290,833,920
Size2.1 GB 277.4 MB
Events in quadrant A13,472,0101,876,650
Events in quadrant B24,175,6821,783,360
Events in quadrant C14,797,0961,820,625
Events in quadrant D13,655,9211,772,422

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0544310
B0872910
C0595420
D0563290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04600
B04600
C04600
D04600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A225838373.706328%
B22574535323.713121%
C2257414466.405599%
D2257110014.434894%

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 37002 22599 363 363 0.98% 1.61%
B 37002 22598 3859 3859 10.43% 17.08%
C 37002 22598 833 833 2.25% 3.69%
D 37002 22599 747 747 2.02% 3.31%

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 5 1414101 2618.18 2656 2597 539.1
A 5 16 1244500 2303.59 2656 2597 539.1
A 13 251 520676 960.98 2656 2597 539.1
B 0 85 14133839 29535.82 2517 2459 478.4
B 4 173 87487 177.72 2517 2459 478.4
B 0 214 82245 166.76 2517 2459 478.4
C 4 254 4787017 8093.25 2559 2573 591.2
C 4 238 26142 39.87 2559 2573 591.2
C 13 61 19255 28.22 2559 2573 591.2
D 1 52 1800111 2607.73 2553 2506 689.3
D 13 29 659361 952.88 2553 2506 689.3
D 12 233 555881 802.77 2553 2506 689.3

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