ASTROSAT CZTI

Data Quality Report

Orbit 42367

Creation date: 2024-06-27T22:39:28.947425
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/AS1C06_010T01_9000005800_42367cztM0_level2.fits modeM0/AS1C06_010T01_9000005800_42367cztM0_level2_quad_clean.evt
Size (bytes)574,712,640159,419,520
Size548.1 MB 152.0 MB
Events in quadrant A5,288,9741,057,338
Events in quadrant B4,945,1161,066,861
Events in quadrant C4,610,4981,049,345
Events in quadrant D5,653,789961,246

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218052
B0220302
C0204062
D0241262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9988490.490589%
B99881201.201442%
C9989110.110121%
D99882132.132559%

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 12973 9990 35 35 0.27% 0.35%
B 12973 9990 67 67 0.52% 0.67%
C 12974 9991 3 3 0.02% 0.03%
D 12973 9990 162 162 1.25% 1.62%

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 946236 4366.4 1063 1042 216.5
A 13 248 126474 579.44 1063 1042 216.5
A 7 3 90773 414.52 1063 1042 216.5
B 0 189 217575 1069.65 1054 1024 202.4
B 5 172 183383 900.76 1054 1024 202.4
B 5 255 97249 475.3 1054 1024 202.4
C 15 214 421223 1739.51 1039 1044 241.6
C 15 111 85735 350.61 1039 1044 241.6
C 8 79 37328 150.21 1039 1044 241.6
D 12 6 366857 1450.02 1035 1004 252.3
D 1 52 273387 1079.56 1035 1004 252.3
D 12 233 213374 841.71 1035 1004 252.3

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