ASTROSAT CZTI

Data Quality Report

Orbit 38847

Creation date: 2024-06-27T21:57:12.088069
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/AS1A12_077T06_9000005408_38847cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38847cztM0_level2_quad_clean.evt
Size (bytes)693,529,920164,888,640
Size661.4 MB 157.3 MB
Events in quadrant A5,454,3291,139,527
Events in quadrant B4,785,5681,163,420
Events in quadrant C5,062,9121,099,918
Events in quadrant D9,575,951880,849

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223333
B0209862
C0212682
D0353252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10231670.654872%
B10231280.273678%
C10231610.596227%
D10231151014.759066%

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 13156 10233 45 45 0.34% 0.44%
B 13156 10233 12 12 0.09% 0.12%
C 13156 10233 41 41 0.31% 0.40%
D 13156 10233 1347 1347 10.24% 13.16%

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 650797 2776.45 1154 1130 234.0
A 9 143 254716 1083.74 1154 1130 234.0
A 13 248 82048 345.81 1154 1130 234.0
B 15 85 81630 363.85 1148 1115 221.3
B 5 172 49055 216.64 1148 1115 221.3
B 0 155 38132 167.28 1148 1115 221.3
C 15 214 416794 1587.0 1124 1129 261.9
C 14 254 181551 688.85 1124 1129 261.9
C 3 233 40227 149.28 1124 1129 261.9
D 2 250 1397372 5438.15 1051 1020 256.8
D 12 227 1221311 4752.48 1051 1020 256.8
D 12 233 1091535 4247.06 1051 1020 256.8

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