ASTROSAT CZTI

Data Quality Report

Orbit 34508

Creation date: 2022-02-15T10:31:53.467467
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/AS1A05_156T01_9000004928_34508cztM0_level2.evt modeM0/AS1A05_156T01_9000004928_34508cztM0_level2_quad_clean.evt
Size (bytes)503,213,76055,431,360
Size479.9 MB 52.9 MB
Events in quadrant A2,994,819334,975
Events in quadrant B4,002,748331,242
Events in quadrant C3,189,315327,900
Events in quadrant D4,688,680307,303

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121303
B0152722
C0125642
D0176422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5385370.687094%
B53853316.146704%
C5385631.169916%
D53851602.971216%

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 7388 5386 18 18 0.24% 0.33%
B 7388 5386 229 229 3.10% 4.25%
C 7388 5386 49 49 0.66% 0.91%
D 7388 5386 145 145 1.96% 2.69%

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 15 17 109474 772.49 710 696 140.8
A 9 143 82563 581.38 710 696 140.8
A 10 83 38536 268.72 710 696 140.8
B 5 172 901521 7014.3 679 664 128.4
B 4 232 158520 1229.11 679 664 128.4
B 0 229 104627 809.48 679 664 128.4
C 15 214 229575 1479.27 676 684 154.7
C 0 10 155501 1000.55 676 684 154.7
C 12 249 72163 461.95 676 684 154.7
D 8 195 1035572 6212.25 683 664 166.6
D 7 80 339119 2031.65 683 664 166.6
D 3 13 115425 688.87 683 664 166.6

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