ASTROSAT CZTI

Data Quality Report

Orbit 04866

Creation date: 2024-06-27T14:48:13.479312
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/AS1G05_009T02_9000000618_04866cztM0_level2.evt modeM0/AS1G05_009T02_9000000618_04866cztM0_level2_quad_clean.evt
Size (bytes)528,039,36093,286,080
Size503.6 MB 89.0 MB
Events in quadrant A3,801,746580,461
Events in quadrant B4,209,848587,992
Events in quadrant C3,401,520577,809
Events in quadrant D4,067,615555,089

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166143
B0177252
C0154952
D0175752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75211151.529052%
B75212263.004920%
C7521210.279218%
D75211251.662013%

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 9296 7523 58 58 0.62% 0.77%
B 9296 7523 112 112 1.20% 1.49%
C 9296 7523 1 1 0.01% 0.01%
D 9296 7523 70 70 0.75% 0.93%

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 13 251 300980 1677.34 877 857 178.9
A 0 50 65257 359.92 877 857 178.9
A 8 15 22897 123.18 877 857 178.9
B 10 16 525616 3089.23 883 861 169.9
B 4 80 74656 434.43 883 861 169.9
B 15 204 57310 332.32 883 861 169.9
C 1 16 34574 167.81 856 861 200.9
C 9 247 10469 47.82 856 861 200.9
C 8 128 7099 31.05 856 861 200.9
D 2 136 383419 1805.64 852 825 211.9
D 13 235 134208 629.5 852 825 211.9
D 10 231 94212 440.74 852 825 211.9

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