ASTROSAT CZTI

Data Quality Report

Orbit 35093

Creation date: 2022-03-31T11:11:21.585486
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/AS1T05_015T01_9000005026_35093cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35093cztM0_level2_quad_clean.evt
Size (bytes)534,533,76077,080,320
Size509.8 MB 73.5 MB
Events in quadrant A2,723,659491,545
Events in quadrant B3,764,430492,394
Events in quadrant C3,135,257496,823
Events in quadrant D6,170,526446,035

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120143
B0150362
C0128232
D0224162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A582440.068681%
B58242313.966346%
C5824641.098901%
D582470812.156593%

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 7167 5825 0 0 0.00% 0.00%
B 7167 5825 154 154 2.15% 2.64%
C 7167 5825 43 43 0.60% 0.74%
D 7167 5825 541 541 7.55% 9.29%

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 10 83 83709 614.68 669 655 135.1
A 13 6 19084 136.39 669 655 135.1
A 9 143 18384 131.21 669 655 135.1
B 5 172 959034 7483.51 661 643 128.1
B 5 255 95983 744.45 661 643 128.1
B 0 190 39490 303.33 661 643 128.1
C 15 214 245231 1611.16 653 658 151.8
C 0 10 186870 1226.7 653 658 151.8
C 12 250 65074 424.35 653 658 151.8
D 8 195 1751840 11562.88 614 595 151.5
D 7 80 1005455 6634.75 614 595 151.5
D 1 52 494061 3258.19 614 595 151.5

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