ASTROSAT CZTI

Data Quality Report

Orbit 37878

Creation date: 2024-06-27T21:45:37.061632
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/AS1C07_001T12_9000005352_37878cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37878cztM0_level2_quad_clean.evt
Size (bytes)489,723,84080,683,200
Size467.0 MB 76.9 MB
Events in quadrant A2,841,117535,230
Events in quadrant B2,839,288539,413
Events in quadrant C2,920,890527,731
Events in quadrant D5,848,778447,901

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119513
B0122152
C0122742
D0211832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5622140.249022%
B5622751.334045%
C5622530.942725%
D5622109419.459267%

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 8877 5624 3 3 0.03% 0.05%
B 8877 5624 46 46 0.52% 0.82%
C 8877 5624 32 32 0.36% 0.57%
D 8877 5624 866 866 9.76% 15.40%

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 358354 2842.52 627 614 125.9
A 12 16 17999 138.14 627 614 125.9
A 9 143 13940 105.89 627 614 125.9
B 5 172 293643 2484.96 621 605 117.9
B 0 189 29250 242.91 621 605 117.9
B 0 229 20069 165.05 621 605 117.9
C 15 214 235048 1665.53 603 605 140.8
C 14 254 192755 1365.07 603 605 140.8
C 0 10 106269 750.66 603 605 140.8
D 1 52 2631451 19860.74 535 520 132.5
D 12 235 210996 1588.87 535 520 132.5
D 1 47 209367 1576.57 535 520 132.5

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