ASTROSAT CZTI

Data Quality Report

Orbit 41725

Creation date: 2024-06-27T22:32:04.592495
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_077T12_9000005692_41725cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41725cztM0_level2_quad_clean.evt
Size (bytes)80,648,64020,707,200
Size76.9 MB 19.7 MB
Events in quadrant A978,112138,277
Events in quadrant B553,961141,593
Events in quadrant C816,880125,282
Events in quadrant D534,797126,789

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037561
B026031
C032661
D025721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1267403.157064%
B126750.394633%
C12671017.971586%
D126750.394633%

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 1267 1267 42 42 3.31% 3.31%
B 1267 1267 2 2 0.16% 0.16%
C 1267 1267 94 94 7.42% 7.42%
D 1267 1267 2 2 0.16% 0.16%

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 2 79 248847 8431.02 132 129 29.5
A 10 83 183971 6231.86 132 129 29.5
A 7 3 26445 892.06 132 129 29.5
B 0 186 12975 458.12 133 129 28.0
B 4 141 12760 450.45 133 129 28.0
B 12 111 3172 108.52 133 129 28.0
C 0 10 272463 8722.76 124 125 31.2
C 15 214 52920 1690.98 124 125 31.2
C 14 67 2785 85.2 124 125 31.2
D 12 217 6510 187.43 133 129 34.0
D 2 234 5702 163.69 133 129 34.0
D 10 199 4544 129.68 133 129 34.0

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