ASTROSAT CZTI

Data Quality Report

Orbit 07160

Creation date: 2024-06-27T15:16:21.021716
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/AS1A02_175T01_9000000976_07160cztM0_level2.evt modeM0/AS1A02_175T01_9000000976_07160cztM0_level2_quad_clean.evt
Size (bytes)165,487,68034,260,480
Size157.8 MB 32.7 MB
Events in quadrant A997,129228,881
Events in quadrant B1,128,036235,879
Events in quadrant C918,215233,406
Events in quadrant D1,841,111204,502

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040792
B045581
C038831
D067691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1841452.444324%
B1841653.530690%
C1841201.086366%
D184124513.307985%

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 2916 1841 11 11 0.38% 0.60%
B 2916 1841 3 3 0.10% 0.16%
C 2916 1841 0 0 0.00% 0.00%
D 2916 1841 182 182 6.24% 9.89%

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 14 238 48343 944.87 239 234 50.9
A 8 15 20401 396.08 239 234 50.9
A 15 31 3438 62.93 239 234 50.9
B 4 81 55041 1133.32 241 236 48.4
B 0 219 52232 1075.23 241 236 48.4
B 0 214 35385 726.85 241 236 48.4
C 4 254 9038 157.97 231 231 55.8
C 9 68 7283 126.49 231 231 55.8
C 13 61 1767 27.55 231 231 55.8
D 2 216 396147 7062.78 221 214 56.1
D 14 34 358442 6390.18 221 214 56.1
D 12 233 109197 1944.07 221 214 56.1

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