ASTROSAT CZTI

Data Quality Report

Orbit 20639

Creation date: 2024-06-27T18:17:45.425275
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_007T06_9000003050_20639cztM0_level2.evt modeM0/AS1A05_007T06_9000003050_20639cztM0_level2_quad_clean.evt
Size (bytes)521,749,440116,700,480
Size497.6 MB 111.3 MB
Events in quadrant A3,084,523820,939
Events in quadrant B3,410,055805,004
Events in quadrant C3,149,544773,644
Events in quadrant D5,755,250720,455

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129866
B0140086
C0130026
D02115810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5937741.246421%
B59381051.768272%
C5937791.330638%
D593672012.129380%

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 7189 5940 2 2 0.03% 0.03%
B 7189 5940 26 26 0.36% 0.44%
C 7189 5940 0 0 0.00% 0.00%
D 7188 5939 544 544 7.57% 9.16%

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 5 16 70148 445.53 784 771 155.7
A 0 226 7018 40.12 784 771 155.7
A 12 194 5769 32.1 784 771 155.7
B 7 220 174059 1221.38 764 746 141.9
B 0 219 51155 355.25 764 746 141.9
B 0 197 41410 286.57 764 746 141.9
C 14 238 116492 671.31 745 754 172.4
C 8 208 114562 660.12 745 754 172.4
C 7 247 7285 37.88 745 754 172.4
D 1 52 1360649 7746.69 732 713 175.6
D 1 20 920108 5237.21 732 713 175.6
D 12 227 414846 2359.05 732 713 175.6

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