ASTROSAT CZTI

Data Quality Report

Orbit 28807

Creation date: 2024-06-27T19:56:37.315241
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/AS1A10_121T01_9000004134_28807cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28807cztM0_level2_quad_clean.evt
Size (bytes)562,256,640104,745,600
Size536.2 MB 99.9 MB
Events in quadrant A3,317,810698,246
Events in quadrant B3,926,856710,511
Events in quadrant C3,781,499687,522
Events in quadrant D5,585,974647,029

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134751
B0153801
C0150811
D0207181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61441282.083333%
B61442794.541016%
C61442443.971354%
D61444627.519531%

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 7259 6144 42 42 0.58% 0.68%
B 7259 6144 168 168 2.31% 2.73%
C 7259 6144 14 14 0.19% 0.23%
D 7259 6144 378 378 5.21% 6.15%

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 14 235 287044 1855.38 780 765 154.3
A 13 254 12359 75.14 780 765 154.3
A 15 174 9613 57.34 780 765 154.3
B 5 172 609519 4265.4 768 750 142.7
B 5 255 218875 1528.32 768 750 142.7
B 0 190 36176 248.22 768 750 142.7
C 3 233 483397 2753.92 759 766 175.3
C 14 238 163886 930.77 759 766 175.3
C 4 254 108035 612.08 759 766 175.3
D 1 52 1443567 8037.04 756 737 179.5
D 8 195 632127 3517.05 756 737 179.5
D 13 104 367056 2040.52 756 737 179.5

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