ASTROSAT CZTI

Data Quality Report

Orbit 26052

Creation date: 2024-06-27T19:24:17.643206
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/AS1A09_085T03_9000003764_26052cztM0_level2.evt modeM0/AS1A09_085T03_9000003764_26052cztM0_level2_quad_clean.evt
Size (bytes)690,932,16088,303,680
Size658.9 MB 84.2 MB
Events in quadrant A2,989,677644,347
Events in quadrant B2,824,653661,099
Events in quadrant C2,820,863630,628
Events in quadrant D11,894,833328,954

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125760
B0120770
C0120990
D0393230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5829440.754846%
B5830160.274443%
C5830410.703259%
D5829354560.816607%

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 7039 5829 25 25 0.36% 0.43%
B 7040 5831 0 0 0.00% 0.00%
C 7040 5831 0 0 0.00% 0.00%
D 7038 5829 3587 3587 50.97% 61.54%

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 0 13 220887 1545.0 717 705 142.5
A 13 254 8872 57.31 717 705 142.5
A 3 137 6177 38.4 717 705 142.5
B 12 111 15755 112.6 713 696 133.7
B 0 190 15336 109.46 713 696 133.7
B 11 111 14068 99.98 713 696 133.7
C 14 238 111762 707.78 683 688 156.9
C 3 233 46076 289.22 683 688 156.9
C 13 61 4831 26.4 683 688 156.9
D 1 52 7960738 76360.17 407 397 104.2
D 1 3 1437807 13788.46 407 397 104.2
D 12 2 812484 7790.01 407 397 104.2

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