ASTROSAT CZTI

Data Quality Report

Orbit 00929

Creation date: 2024-06-27T14:04:54.552199
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/AS1P01_163T03_9000000186_00929cztM0_level2.evt modeM0/AS1P01_163T03_9000000186_00929cztM0_level2_quad_clean.evt
Size (bytes)1,134,290,88091,722,240
Size1.1 GB 87.5 MB
Events in quadrant A8,393,215585,490
Events in quadrant B8,547,438588,320
Events in quadrant C9,626,703564,730
Events in quadrant D7,330,161561,146

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297890
B0302580
C0335620
D0267060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6863170.247705%
B6863310.451698%
C68636369.267084%
D6862150.218595%

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 7563 6864 348 348 4.60% 5.07%
B 7563 6864 330 330 4.36% 4.81%
C 7563 6864 1101 1101 14.56% 16.04%
D 7562 6863 152 152 2.01% 2.21%

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 14 170 342766 680.04 2081 2095 501.0
A 15 233 55076 105.76 2081 2095 501.0
A 12 189 10913 17.6 2081 2095 501.0
B 7 221 86022 161.87 2202 2210 517.8
B 5 191 38575 70.24 2202 2210 517.8
B 5 249 15470 25.61 2202 2210 517.8
C 9 83 1774225 3348.38 1909 1974 529.3
C 15 241 255347 478.71 1909 1974 529.3
C 9 144 57583 105.06 1909 1974 529.3
D 1 4 126513 213.96 1880 1947 582.2
D 13 171 121973 206.16 1880 1947 582.2
D 10 125 18128 27.79 1880 1947 582.2

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