ASTROSAT CZTI

Data Quality Report

Orbit 25466

Creation date: 2024-06-27T19:17:59.238443
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_085T02_9000003716_25466cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25466cztM0_level2_quad_clean.evt
Size (bytes)514,624,32092,551,680
Size490.8 MB 88.3 MB
Events in quadrant A3,170,607602,489
Events in quadrant B3,180,955604,608
Events in quadrant C3,165,128580,146
Events in quadrant D5,613,851548,106

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137980
B0137960
C0138150
D0212140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6703670.999552%
B6704881.312649%
C6704781.163484%
D67044586.831742%

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 6958 6704 0 0 0.00% 0.00%
B 6959 6705 0 0 0.00% 0.00%
C 6959 6705 0 0 0.00% 0.00%
D 6959 6705 370 370 5.32% 5.52%

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 13 254 10640 59.24 821 803 166.0
A 3 137 7674 41.38 821 803 166.0
A 0 226 7246 38.8 821 803 166.0
B 12 111 19300 118.11 807 785 156.8
B 11 111 17171 104.53 807 785 156.8
B 14 111 15409 93.29 807 785 156.8
C 14 238 125056 677.52 777 782 183.4
C 13 61 5365 24.99 777 782 183.4
C 8 128 3510 14.87 777 782 183.4
D 1 52 1129039 5931.86 774 753 190.2
D 8 195 843084 4428.48 774 753 190.2
D 7 238 653233 3430.35 774 753 190.2

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