ASTROSAT CZTI

Data Quality Report

Orbit 24443

Creation date: 2024-06-27T19:06:04.076169
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/AS1T03_183T01_9000003606_24443cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24443cztM0_level2_quad_clean.evt
Size (bytes)1,633,487,040375,480,000
Size1.5 GB 358.1 MB
Events in quadrant A10,709,3772,494,754
Events in quadrant B11,253,3642,533,680
Events in quadrant C11,156,4672,431,990
Events in quadrant D14,808,1612,340,872

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0473314
B0482895
C0481904
D0591104

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04620
B04620
C04620
D04620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A228532471.080821%
B228533201.400254%
C228533691.614668%
D228538523.728176%

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 26018 22857 13 13 0.05% 0.06%
B 26018 22857 38 38 0.15% 0.17%
C 26018 22856 19 19 0.07% 0.08%
D 26018 22857 509 509 1.96% 2.23%

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 4 2 195813 354.13 2727 2668 545.4
A 13 254 37280 63.46 2727 2668 545.4
A 3 137 24732 40.45 2727 2668 545.4
B 3 64 377699 732.82 2718 2648 511.8
B 4 81 124424 237.94 2718 2648 511.8
B 12 111 63369 118.64 2718 2648 511.8
C 14 238 416336 684.81 2613 2632 604.1
C 10 9 408976 672.63 2613 2632 604.1
C 2 16 124474 201.69 2613 2632 604.1
D 1 52 2448299 3846.04 2626 2545 635.9
D 12 218 1202736 1887.35 2626 2545 635.9
D 8 195 891763 1398.33 2626 2545 635.9

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