ASTROSAT CZTI

Data Quality Report

Orbit 18573

Creation date: 2024-06-27T17:51:38.995947
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_075T07_9000002760_18573cztM0_level2.evt modeM0/AS1A05_075T07_9000002760_18573cztM0_level2_quad_clean.evt
Size (bytes)344,136,96058,544,640
Size328.2 MB 55.8 MB
Events in quadrant A2,282,705362,069
Events in quadrant B2,247,781375,188
Events in quadrant C2,363,033363,964
Events in quadrant D3,217,466350,223

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097471
B096541
C099521
D0127291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4572350.765529%
B4572591.290464%
C4572811.771654%
D45722846.211724%

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 5522 4573 0 0 0.00% 0.00%
B 5522 4573 2 2 0.04% 0.04%
C 5522 4573 4 4 0.07% 0.09%
D 5522 4573 191 191 3.46% 4.18%

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 14 111 98077 850.35 564 554 114.7
A 5 98 8039 65.26 564 554 114.7
A 13 254 7105 57.12 564 554 114.7
B 0 190 15764 138.31 566 551 110.0
B 12 111 12930 112.54 566 551 110.0
B 11 111 11267 97.42 566 551 110.0
C 14 238 84637 652.69 545 547 128.8
C 4 254 75064 578.39 545 547 128.8
C 9 54 66003 508.06 545 547 128.8
D 1 52 848399 6396.78 538 523 132.5
D 7 238 269547 2029.64 538 523 132.5
D 10 50 57401 429.11 538 523 132.5

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