ASTROSAT CZTI

Data Quality Report

Orbit 28828

Creation date: 2024-06-27T19:56:53.144635
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_121T01_9000004134_28828cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28828cztM0_level2_quad_clean.evt
Size (bytes)2,216,721,600259,493,760
Size2.1 GB 247.5 MB
Events in quadrant A8,786,3681,813,982
Events in quadrant B9,672,5841,831,164
Events in quadrant C10,426,3191,746,174
Events in quadrant D37,044,1051,230,198

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377673
B0402823
C0425923
D01223673

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178931770.989214%
B178945393.012183%
C178945483.062479%
D178941196366.854812%

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 19753 17893 11 11 0.06% 0.06%
B 19754 17894 281 281 1.42% 1.57%
C 19754 17894 2 2 0.01% 0.01%
D 19753 17893 11674 11674 59.10% 65.24%

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 14 235 511023 1195.22 2131 2082 425.8
A 13 254 36534 80.91 2131 2082 425.8
A 3 137 20274 42.72 2131 2082 425.8
B 5 172 880361 2221.32 2111 2060 395.4
B 5 255 165143 412.46 2111 2060 395.4
B 10 245 143228 357.03 2111 2060 395.4
C 3 233 1851454 3885.93 2036 2047 475.9
C 14 238 421214 880.74 2036 2047 475.9
C 14 254 143485 297.19 2036 2047 475.9
D 8 195 19558852 52371.61 1559 1515 373.4
D 1 52 9557885 25590.52 1559 1515 373.4
D 13 104 1526181 4082.83 1559 1515 373.4

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