ASTROSAT CZTI

Data Quality Report

Orbit 43877

Creation date: 2024-06-27T22:56:45.900808
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_065T06_9000005914_43877cztM0_level2.fits modeM0/AS1A13_065T06_9000005914_43877cztM0_level2_quad_clean.evt
Size (bytes)443,963,52099,699,840
Size423.4 MB 95.1 MB
Events in quadrant A4,132,260664,312
Events in quadrant B2,811,091697,785
Events in quadrant C3,668,655663,957
Events in quadrant D5,339,833559,304

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164011
B0128471
C0151541
D0201811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62101101.771337%
B6210140.225443%
C6211460.740621%
D621162510.062792%

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 7315 6211 69 69 0.94% 1.11%
B 7315 6211 4 4 0.05% 0.06%
C 7316 6212 38 38 0.52% 0.61%
D 7316 6212 642 642 8.78% 10.33%

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 10 83 928778 6776.26 667 654 137.0
A 15 223 601608 4387.58 667 654 137.0
A 13 6 10634 72.86 667 654 137.0
B 5 235 44511 334.1 675 655 131.3
B 4 170 28377 211.19 675 655 131.3
B 7 205 19260 141.73 675 655 131.3
C 3 233 937019 6093.22 656 660 153.7
C 14 254 81252 524.44 656 660 153.7
C 15 158 27174 172.54 656 660 153.7
D 7 80 1559221 9732.12 629 609 160.2
D 5 235 402348 2508.5 629 609 160.2
D 13 138 174003 1082.69 629 609 160.2

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