ASTROSAT CZTI

Data Quality Report

Orbit 21271

Creation date: 2024-06-27T18:25:41.569964
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/AS1A05_037T01_9000003140_21271cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21271cztM0_level2_quad_clean.evt
Size (bytes)1,226,767,680143,490,240
Size1.1 GB 136.8 MB
Events in quadrant A6,130,718883,206
Events in quadrant B6,427,230897,739
Events in quadrant C6,245,402877,159
Events in quadrant D17,470,924786,135

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267083
B0272053
C0268833
D0608643

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130321060.813382%
B130331621.242999%
C130321731.327502%
D13032273620.994475%

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 14707 13034 0 0 0.00% 0.00%
B 14708 13035 19 19 0.13% 0.15%
C 14707 13035 4 4 0.03% 0.03%
D 14707 13034 2808 2808 19.09% 21.54%

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 13 254 20686 60.16 1578 1544 318.2
A 0 226 13599 37.89 1578 1544 318.2
A 3 137 13471 37.49 1578 1544 318.2
B 0 190 113484 367.04 1581 1539 305.0
B 0 230 37661 118.43 1581 1539 305.0
B 12 111 37485 117.86 1581 1539 305.0
C 14 238 232211 647.17 1514 1523 356.5
C 3 233 75583 207.77 1514 1523 356.5
C 0 207 37973 102.26 1514 1523 356.5
D 13 174 10175052 28893.82 1453 1412 352.1
D 1 52 928416 2632.75 1453 1412 352.1
D 2 16 449212 1271.78 1453 1412 352.1

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