ASTROSAT CZTI

Data Quality Report

Orbit 37842

Creation date: 2024-06-27T21:45:11.857131
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/AS1C07_001T12_9000005352_37842cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37842cztM0_level2_quad_clean.evt
Size (bytes)445,227,84064,278,720
Size424.6 MB 61.3 MB
Events in quadrant A2,464,949443,083
Events in quadrant B2,919,058433,659
Events in quadrant C2,503,907414,764
Events in quadrant D5,261,091309,301

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103332
B0119651
C0104991
D0190681

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A492680.162404%
B49261553.146569%
C4926400.812018%
D492695819.447828%

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 6840 4927 3 3 0.04% 0.06%
B 6840 4927 131 131 1.92% 2.66%
C 6840 4927 27 27 0.39% 0.55%
D 6840 4927 834 834 12.19% 16.93%

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 283672 2593.18 543 533 109.2
A 9 143 29578 266.01 543 533 109.2
A 15 222 21984 196.46 543 533 109.2
B 5 172 308458 3036.0 533 520 101.4
B 10 246 231707 2279.3 533 520 101.4
B 0 229 123166 1209.18 533 520 101.4
C 15 214 203539 1666.34 530 534 121.8
C 1 23 160705 1314.74 530 534 121.8
C 0 10 41488 336.17 530 534 121.8
D 13 249 1220498 10384.66 485 471 117.5
D 1 52 1157009 9844.26 485 471 117.5
D 2 250 303810 2581.97 485 471 117.5

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