ASTROSAT CZTI

Data Quality Report

Orbit 29668

Creation date: 2024-06-27T20:06:37.471443
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/AS1A10_097T02_9000004272_29668cztM0_level2.evt modeM0/AS1A10_097T02_9000004272_29668cztM0_level2_quad_clean.evt
Size (bytes)847,581,120108,411,840
Size808.3 MB 103.4 MB
Events in quadrant A4,157,954717,961
Events in quadrant B4,677,496722,597
Events in quadrant C4,411,496695,409
Events in quadrant D11,838,651547,059

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177932
B0193082
C0183802
D0411262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86391221.412200%
B86391732.002547%
C86392252.604468%
D8639248728.788054%

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 10159 8639 0 0 0.00% 0.00%
B 10159 8639 17 17 0.17% 0.20%
C 10159 8639 8 8 0.08% 0.09%
D 10159 8639 2337 2337 23.00% 27.05%

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 13 254 15756 67.63 1076 1051 217.4
A 3 137 10759 44.65 1076 1051 217.4
A 0 226 9059 36.83 1076 1051 217.4
B 0 229 211327 1005.29 1067 1035 209.2
B 0 189 199475 948.64 1067 1035 209.2
B 0 190 36279 168.48 1067 1035 209.2
C 14 238 178436 729.96 1030 1036 243.0
C 10 22 97597 397.32 1030 1036 243.0
C 3 233 83656 339.96 1030 1036 243.0
D 7 80 7442610 33185.92 929 901 224.2
D 8 195 380935 1694.74 929 901 224.2
D 7 238 242633 1077.99 929 901 224.2

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