ASTROSAT CZTI

Data Quality Report

Orbit 35263

Creation date: 2022-04-06T18:19:07.155169
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/AS1A11_047T09_9000005054_35263cztM0_level2.evt modeM0/AS1A11_047T09_9000005054_35263cztM0_level2_quad_clean.evt
Size (bytes)586,065,60089,205,120
Size558.9 MB 85.1 MB
Events in quadrant A2,622,541652,033
Events in quadrant B8,274,269487,312
Events in quadrant C3,048,654620,416
Events in quadrant D3,470,431595,643

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106413
B0280602
C0118642
D0134562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A491970.142305%
B4919232747.306363%
C49191513.069730%
D49191633.313682%

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 7072 4920 0 0 0.00% 0.00%
B 7071 4919 1885 1885 26.66% 38.32%
C 7072 4920 116 116 1.64% 2.36%
D 7072 4920 134 134 1.89% 2.72%

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 95931 739.35 644 634 128.9
A 7 191 19198 144.03 644 634 128.9
A 13 254 8368 60.0 644 634 128.9
B 5 236 4712827 49340.88 508 497 95.5
B 5 172 1439640 15068.68 508 497 95.5
B 3 112 61901 642.94 508 497 95.5
C 0 10 343847 2486.42 600 606 138.0
C 15 214 208815 1508.26 600 606 138.0
C 9 69 100805 725.84 600 606 138.0
D 7 80 262948 1759.67 614 599 149.1
D 2 249 239150 1600.05 614 599 149.1
D 10 118 140942 941.33 614 599 149.1

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