ASTROSAT CZTI

Data Quality Report

Orbit 09250

Creation date: 2024-06-27T15:43:12.635873
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/AS1A03_091T02_9000001292_09250cztM0_level2.evt modeM0/AS1A03_091T02_9000001292_09250cztM0_level2_quad_clean.evt
Size (bytes)321,883,20054,095,040
Size307.0 MB 51.6 MB
Events in quadrant A2,330,524335,280
Events in quadrant B2,322,438343,653
Events in quadrant C2,599,389329,416
Events in quadrant D2,196,057321,127

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137794244
B0136013915
C0164075818
D0137204213

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181
B0182
C0181
D0192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012840
B012838
C012842
D012834

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4383210.479124%
B4420420.950226%
C42981383.210796%
D4390451.025057%

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 7540 5154 2 2 0.03% 0.04%
B 7540 5201 0 0 0.00% 0.00%
C 7540 5111 110 110 1.46% 2.15%
D 7539 5194 26 26 0.34% 0.50%

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 192126 1725.84 542 532 111.0
A 1 162 15182 131.96 542 532 111.0
A 15 174 12213 105.22 542 532 111.0
B 0 219 99526 931.42 551 540 106.3
B 15 255 24347 224.01 551 540 106.3
B 0 214 24067 221.38 551 540 106.3
C 9 68 578117 4834.65 509 512 119.5
C 14 234 31884 262.59 509 512 119.5
C 13 61 3799 27.51 509 512 119.5
D 2 136 83451 580.8 517 504 142.8
D 7 71 66274 460.52 517 504 142.8
D 1 52 36517 252.16 517 504 142.8

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