ASTROSAT CZTI

Data Quality Report

Orbit 40706

Creation date: 2024-06-27T22:19:24.323045
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_029T02_9000005558_40706cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40706cztM0_level2_quad_clean.evt
Size (bytes)313,116,48089,740,800
Size298.6 MB 85.6 MB
Events in quadrant A2,863,595607,840
Events in quadrant B2,677,191636,200
Events in quadrant C2,926,694606,640
Events in quadrant D2,729,768512,932

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116683
B0112502
C0118202
D0116322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5044250.495638%
B5044390.773196%
C5044350.693894%
D50443436.800159%

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 7077 5045 20 20 0.28% 0.40%
B 7077 5045 23 23 0.32% 0.46%
C 7077 5045 44 44 0.62% 0.87%
D 7077 5045 61 61 0.86% 1.21%

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 462519 3948.56 573 562 117.0
A 2 79 177024 1508.3 573 562 117.0
A 3 137 6113 47.45 573 562 117.0
B 0 190 148143 1346.47 576 562 109.6
B 0 229 145353 1321.02 576 562 109.6
B 5 255 63120 570.76 576 562 109.6
C 9 187 487961 3733.98 564 567 130.5
C 15 214 218302 1668.09 564 567 130.5
C 14 254 12556 91.85 564 567 130.5
D 1 47 158661 1196.6 532 518 132.2
D 2 250 147929 1115.4 532 518 132.2
D 12 191 130182 981.11 532 518 132.2

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