ASTROSAT CZTI

Data Quality Report

Orbit 14956

Creation date: 2024-06-27T17:01:48.246763
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/AS1T02_056T01_9000002210_14956cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14956cztM0_level2_quad_clean.evt
Size (bytes)732,614,40087,056,640
Size698.7 MB 83.0 MB
Events in quadrant A3,269,354581,934
Events in quadrant B3,973,362575,655
Events in quadrant C3,272,685566,446
Events in quadrant D11,221,652446,942

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140632
B0161111
C0140041
D0379651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66651512.265566%
B66653475.206302%
C66651071.605401%
D6665246837.029257%

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 6906 6668 1 1 0.01% 0.01%
B 6906 6668 142 142 2.06% 2.13%
C 6906 6668 0 0 0.00% 0.00%
D 6906 6666 2511 2511 36.36% 37.67%

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 12 189 51927 306.26 819 802 166.9
A 1 162 21812 125.86 819 802 166.9
A 1 178 10188 56.23 819 802 166.9
B 3 64 496368 3249.22 800 779 152.5
B 15 201 112301 731.17 800 779 152.5
B 10 246 66628 431.72 800 779 152.5
C 3 233 164342 883.58 792 797 185.1
C 7 247 7939 38.59 792 797 185.1
C 13 61 5735 26.68 792 797 185.1
D 7 254 7297927 45283.93 674 657 161.1
D 13 249 1253481 7774.52 674 657 161.1
D 7 38 42152 257.5 674 657 161.1

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