ASTROSAT CZTI

Data Quality Report

Orbit 18459

Creation date: 2024-06-27T17:50:19.248298
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/AS1A05_144T02_9000002734_18459cztM0_level2.evt modeM0/AS1A05_144T02_9000002734_18459cztM0_level2_quad_clean.evt
Size (bytes)594,685,440104,353,920
Size567.1 MB 99.5 MB
Events in quadrant A4,722,431649,702
Events in quadrant B4,215,096676,611
Events in quadrant C3,900,786641,011
Events in quadrant D4,614,002621,610

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196052
B0178902
C0170252
D0194242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82193994.854605%
B82202863.479319%
C82202032.469586%
D82201922.335766%

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 9009 8220 167 167 1.85% 2.03%
B 9010 8220 23 23 0.26% 0.28%
C 9010 8221 0 0 0.00% 0.00%
D 9010 8221 94 94 1.04% 1.14%

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 13 793030 4060.18 967 946 195.1
A 14 238 149608 762.03 967 946 195.1
A 15 174 47008 236.11 967 946 195.1
B 10 245 135162 713.4 987 960 188.1
B 7 220 130126 686.63 987 960 188.1
B 12 111 22616 115.12 987 960 188.1
C 14 238 147101 660.26 948 951 221.4
C 3 233 35952 158.12 948 951 221.4
C 9 54 16871 71.92 948 951 221.4
D 7 238 258069 1113.0 953 921 231.0
D 14 34 257414 1110.16 953 921 231.0
D 13 168 217273 936.42 953 921 231.0

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