ASTROSAT CZTI

Data Quality Report

Orbit 20240228_A13_071T01_9000006104_level2

Creation date: 2024-03-02T10:51:11.410080
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/AS1A13_071T01_9000006104cztM0_level2.fits modeM0/AS1A13_071T01_9000006104cztM0_level2_quad_clean.evt
Size (bytes)337,777,920383,624,640
Size322.1 MB 365.9 MB
Events in quadrant A2,000,8922,354,106
Events in quadrant B1,956,7062,404,036
Events in quadrant C2,012,1462,274,214
Events in quadrant D1,670,4161,998,530

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07660
B07660
C07660
D07660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01235620
B0862530
C0832100
D01100930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3767913833.670480%
B3767914023.720906%
C376798312.205473%
D3767924956.621726%

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 45164 37678 0 0 0.00% 0.00%
B 45164 37666 0 0 0.00% 0.00%
C 45164 37663 0 0 0.00% 0.00%
D 45164 37622 0 0 0.00% 0.00%

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 7 110 1644 8.5 522 488 136.0
A 15 236 1550 7.81 522 488 136.0
A 0 29 1541 7.74 522 488 136.0
B 2 9 1868 13.55 516 492 101.5
B 2 8 1493 9.86 516 492 101.5
B 3 17 1365 8.6 516 492 101.5
C 3 203 1530 7.42 532 496 139.4
C 1 81 1517 7.33 532 496 139.4
C 3 202 1514 7.31 532 496 139.4
D 8 176 1603 8.62 479 433 135.7
D 12 6 1226 5.84 479 433 135.7
D 10 189 1223 5.82 479 433 135.7

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