ASTROSAT CZTI

Data Quality Report

Orbit 34986

Creation date: 2022-03-19T19:03:04.338680
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A10_123T11_9000005014_34986cztM0_level2.evt modeM0/AS1A10_123T11_9000005014_34986cztM0_level2_quad_clean.evt
Size (bytes)447,877,44095,584,320
Size427.1 MB 91.2 MB
Events in quadrant A2,578,850641,484
Events in quadrant B3,184,416651,929
Events in quadrant C2,929,599659,387
Events in quadrant D4,532,149591,574

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108033
B0126432
C0117862
D0168892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A498770.140365%
B49871893.789854%
C4987671.343493%
D49874799.604973%

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 7020 4988 0 0 0.00% 0.00%
B 7020 4988 118 118 1.68% 2.37%
C 7020 4988 52 52 0.74% 1.04%
D 7020 4988 399 399 5.68% 8.00%

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 10 83 73691 574.19 640 628 127.2
A 9 143 25084 192.2 640 628 127.2
A 13 254 8844 64.57 640 628 127.2
B 5 172 621066 5203.58 635 621 119.2
B 15 85 35231 290.27 635 621 119.2
B 12 111 14069 112.79 635 621 119.2
C 15 214 209726 1442.99 637 643 144.9
C 0 10 174423 1199.35 637 643 144.9
C 14 67 40062 272.05 637 643 144.9
D 8 195 989849 6795.84 599 584 145.6
D 10 118 752850 5167.75 599 584 145.6
D 2 249 147833 1011.54 599 584 145.6

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