ASTROSAT CZTI

Data Quality Report

Orbit 22922

Creation date: 2024-06-27T18:47:34.607308
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/AS1T03_170T01_9000003388_22922cztM0_level2.evt modeM0/AS1T03_170T01_9000003388_22922cztM0_level2_quad_clean.evt
Size (bytes)740,577,600118,287,360
Size706.3 MB 112.8 MB
Events in quadrant A5,116,315738,092
Events in quadrant B4,841,752755,099
Events in quadrant C4,953,850712,185
Events in quadrant D6,846,276690,532

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219042
B0208122
C0213082
D0269972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99061321.332526%
B9906470.474460%
C99061011.019584%
D99064194.229760%

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 11551 9908 37 37 0.32% 0.37%
B 11551 9908 7 7 0.06% 0.07%
C 11551 9908 0 0 0.00% 0.00%
D 11551 9908 386 386 3.34% 3.90%

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 0 23 527867 2227.65 1174 1149 236.4
A 0 226 42017 172.84 1174 1149 236.4
A 4 2 17672 69.88 1174 1149 236.4
B 4 173 68583 296.97 1181 1148 227.1
B 0 190 57323 247.38 1181 1148 227.1
B 0 228 39607 169.36 1181 1148 227.1
C 6 80 370662 1397.1 1128 1132 264.5
C 14 238 177098 665.28 1128 1132 264.5
C 13 61 7800 25.21 1128 1132 264.5
D 1 52 1848081 6673.0 1127 1092 276.8
D 13 153 270357 972.83 1127 1092 276.8
D 13 172 191011 686.16 1127 1092 276.8

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