ASTROSAT CZTI

Data Quality Report

Orbit 00558

Creation date: 2024-06-27T13:59:45.774711
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_015T03_9000000076_00558cztM0_level2.evt modeM0/AS1P01_015T03_9000000076_00558cztM0_level2_quad_clean.evt
Size (bytes)856,869,12074,401,920
Size817.2 MB 71.0 MB
Events in quadrant A5,844,969474,751
Events in quadrant B6,051,636475,437
Events in quadrant C5,512,070483,841
Events in quadrant D8,205,288463,349

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209693
B0215632
C0200252
D0279512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5077110.216663%
B507760.118180%
C507730.059090%
D5077300.590900%

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 7232 5078 111 111 1.53% 2.19%
B 7232 5078 90 90 1.24% 1.77%
C 7232 5078 50 50 0.69% 0.98%
D 7232 5078 644 644 8.90% 12.68%

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 0 69 36230 104.03 1479 1458 334.3
A 0 238 35142 100.77 1479 1458 334.3
A 15 171 22320 62.41 1479 1458 334.3
B 4 206 123635 347.2 1506 1512 351.7
B 8 4 50087 138.1 1506 1512 351.7
B 15 185 22307 59.12 1506 1512 351.7
C 1 1 48221 121.27 1375 1424 385.9
C 7 222 29874 73.73 1375 1424 385.9
C 9 206 14291 33.34 1375 1424 385.9
D 1 239 2545801 6307.7 1296 1348 403.4
D 1 4 194757 479.46 1296 1348 403.4
D 13 221 187701 461.97 1296 1348 403.4

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