ASTROSAT CZTI

Data Quality Report

Orbit 11241

Creation date: 2024-06-27T16:10:11.300707
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/AS1T01_200T01_9000001638_11241cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11241cztM0_level2_quad_clean.evt
Size (bytes)216,803,52045,138,240
Size206.8 MB 43.0 MB
Events in quadrant A1,793,847295,808
Events in quadrant B1,387,099304,557
Events in quadrant C1,101,198302,548
Events in quadrant D2,111,097282,960

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069941
B058161
C050651
D080041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25191124.446209%
B2519331.310044%
C251920.079397%
D25191254.962287%

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 2519 2519 66 66 2.62% 2.62%
B 2519 2519 18 18 0.71% 0.71%
C 2519 2519 0 0 0.00% 0.00%
D 2519 2519 73 73 2.90% 2.90%

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 8 5 421249 7033.82 285 279 59.8
A 15 174 60634 1008.45 285 279 59.8
A 1 162 60584 1007.61 285 279 59.8
B 4 239 113603 2006.64 287 280 56.5
B 11 51 66783 1177.59 287 280 56.5
B 4 80 36888 648.23 287 280 56.5
C 13 61 2108 27.53 282 283 66.3
C 5 239 1175 13.46 282 283 66.3
C 4 254 962 10.24 282 283 66.3
D 12 157 536246 7772.95 280 272 69.0
D 1 52 290685 4211.71 280 272 69.0
D 8 195 59040 852.28 280 272 69.0

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