ASTROSAT CZTI

Data Quality Report

Orbit 41534

Creation date: 2024-06-27T22:30:10.759127
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/AS1A12_035T02_9000005676_41534cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41534cztM0_level2_quad_clean.evt
Size (bytes)307,817,28084,862,080
Size293.6 MB 80.9 MB
Events in quadrant A2,631,839585,990
Events in quadrant B2,213,755600,845
Events in quadrant C3,063,674538,314
Events in quadrant D3,107,289504,723

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107443
B098372
C0120282
D0125872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4846160.330169%
B4846130.268262%
C48462575.303343%
D48462394.931903%

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 6969 4846 5 5 0.07% 0.10%
B 6969 4846 5 5 0.07% 0.10%
C 6969 4847 260 260 3.73% 5.36%
D 6969 4847 239 239 3.43% 4.93%

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 10 83 471433 4204.94 548 537 112.0
A 14 235 17835 154.47 548 537 112.0
A 2 79 16704 144.37 548 537 112.0
B 5 255 29325 274.3 548 534 105.0
B 12 111 12799 116.85 548 534 105.0
B 0 245 12321 112.3 548 534 105.0
C 0 10 613404 5063.88 522 527 121.0
C 15 214 207922 1713.59 522 527 121.0
C 9 54 137588 1132.46 522 527 121.0
D 12 218 358202 2790.94 526 511 128.2
D 12 128 202870 1578.94 526 511 128.2
D 1 47 149587 1163.19 526 511 128.2

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