ASTROSAT CZTI

Data Quality Report

Orbit 20190912_C04_010T01_9000003158_level2

Creation date: 2025-12-03T15:06:29.366913
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/AS1C04_010T01_9000003158cztM0_level2.fits modeM0/AS1C04_010T01_9000003158cztM0_level2_quad_clean.evt
Size (bytes)295,018,560211,394,880
Size281.4 MB 201.6 MB
Events in quadrant A1,896,5221,208,427
Events in quadrant B1,785,1501,208,248
Events in quadrant C1,799,3981,126,438
Events in quadrant D1,548,074952,651

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05620
B05620
C05620
D05620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0612600
B0603160
C0751380
D0913970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A277074271.541127%
B277074451.606092%
C2770713314.803840%
D27707281110.145451%

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 33562 27702 0 0 0.00% 0.00%
B 33562 27702 0 0 0.00% 0.00%
C 33562 27702 0 0 0.00% 0.00%
D 33562 27686 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 0 29 1755 10.7 493 468 120.2
A 7 110 1544 8.95 493 468 120.2
A 9 19 1421 7.93 493 468 120.2
B 2 9 1376 9.71 474 454 95.0
B 2 8 1201 7.87 474 454 95.0
B 5 232 1157 7.4 474 454 95.0
C 3 126 1246 6.55 475 446 122.2
C 12 241 1200 6.17 475 446 122.2
C 9 209 1175 5.97 475 446 122.2
D 3 14 1114 6.12 443 406 115.6
D 6 231 1093 5.94 443 406 115.6
D 1 31 1061 5.66 443 406 115.6

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