ASTROSAT CZTI

Data Quality Report

Orbit 26917

Creation date: 2024-06-27T19:34:27.733754
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/AS1A09_038T19_9000003892_26917cztM0_level2.evt modeM0/AS1A09_038T19_9000003892_26917cztM0_level2_quad_clean.evt
Size (bytes)560,105,28092,419,200
Size534.2 MB 88.1 MB
Events in quadrant A2,505,855644,139
Events in quadrant B6,743,049552,133
Events in quadrant C2,519,144644,612
Events in quadrant D4,833,480584,066

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110010
B0235960
C0109670
D0179730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53211683.157301%
B5322194936.621571%
C53221913.588876%
D532271213.378429%

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 5521 5321 8 8 0.14% 0.15%
B 5522 5322 1245 1245 22.55% 23.39%
C 5522 5322 0 0 0.00% 0.00%
D 5522 5322 551 551 9.98% 10.35%

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 8 192 25363 191.79 634 619 129.0
A 5 168 24533 185.36 634 619 129.0
A 13 254 8710 62.71 634 619 129.0
B 0 189 4156569 38644.85 554 539 107.5
B 10 246 167687 1554.23 554 539 107.5
B 3 64 151708 1405.65 554 539 107.5
C 14 238 99218 675.73 620 621 145.9
C 13 61 4266 24.98 620 621 145.9
C 15 208 3533 19.96 620 621 145.9
D 1 52 1376091 9778.93 592 574 140.7
D 7 80 837808 5952.13 592 574 140.7
D 2 250 236442 1676.85 592 574 140.7

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