ASTROSAT CZTI

Data Quality Report

Orbit 42498

Creation date: 2024-06-27T22:40:53.044845
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/AS1C07_001T10_9000005806_42498cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42498cztM0_level2_quad_clean.evt
Size (bytes)323,003,52094,193,280
Size308.0 MB 89.8 MB
Events in quadrant A3,227,283625,029
Events in quadrant B2,544,519630,604
Events in quadrant C2,658,293616,077
Events in quadrant D3,068,522570,476

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133342
B0119802
C0118622
D0136982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5876130.221239%
B587760.102093%
C587720.034031%
D58771001.701548%

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 8952 5878 3 3 0.03% 0.05%
B 8953 5879 2 2 0.02% 0.03%
C 8953 5879 0 0 0.00% 0.00%
D 8953 5879 73 73 0.82% 1.24%

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 603943 4708.53 621 609 128.1
A 12 189 140674 1093.09 621 609 128.1
A 2 79 25348 193.07 621 609 128.1
B 0 245 41673 343.68 615 597 119.5
B 0 229 21923 178.43 615 597 119.5
B 15 35 20048 162.74 615 597 119.5
C 15 214 244063 1711.37 605 609 142.3
C 9 54 36520 252.44 605 609 142.3
C 0 239 16123 109.06 605 609 142.3
D 12 233 177979 1198.15 604 587 148.1
D 12 6 127482 857.08 604 587 148.1
D 1 52 100759 676.59 604 587 148.1

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