ASTROSAT CZTI

Data Quality Report

Orbit 42120

Creation date: 2024-06-27T22:37:09.076440
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_044T22_9000005750_42120cztM0_level2.fits modeM0/AS1A12_044T22_9000005750_42120cztM0_level2_quad_clean.evt
Size (bytes)671,754,240169,462,080
Size640.6 MB 161.6 MB
Events in quadrant A5,980,9721,138,270
Events in quadrant B5,405,7661,157,181
Events in quadrant C5,047,3171,115,710
Events in quadrant D7,599,003976,126

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02421023
B02351811
C02168818
D03001120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10737300.279408%
B107421471.368460%
C1073740.037254%
D107426786.311674%

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 13554 10747 2 2 0.01% 0.02%
B 13554 10748 105 105 0.77% 0.98%
C 13554 10746 1 1 0.01% 0.01%
D 13554 10748 556 556 4.10% 5.17%

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 1004051 4115.39 1188 1160 243.7
A 15 222 276745 1130.87 1188 1160 243.7
A 14 24 69135 278.94 1188 1160 243.7
B 5 255 396972 1719.51 1178 1142 230.2
B 3 112 263644 1140.32 1178 1142 230.2
B 0 229 89447 383.6 1178 1142 230.2
C 15 214 440278 1615.34 1163 1169 271.8
C 8 79 62584 225.93 1163 1169 271.8
C 12 249 11933 39.6 1163 1169 271.8
D 13 249 1388080 5021.71 1131 1097 276.2
D 12 233 703996 2544.91 1131 1097 276.2
D 1 52 367929 1328.15 1131 1097 276.2

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