ASTROSAT CZTI

Data Quality Report

Orbit 33727

Creation date: 2024-06-27T20:51:52.112181
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/AS1A11_086T01_9000004816_33727cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33727cztM0_level2_quad_clean.evt
Size (bytes)457,182,72079,430,400
Size436.0 MB 75.8 MB
Events in quadrant A2,696,315518,822
Events in quadrant B3,262,284518,964
Events in quadrant C3,144,645525,869
Events in quadrant D4,401,565488,911

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111533
B0130122
C0125862
D0165852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5033260.516591%
B50331052.086231%
C5033741.470296%
D50332134.232068%

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 7126 5034 22 22 0.31% 0.44%
B 7126 5034 80 80 1.12% 1.59%
C 7126 5034 52 52 0.73% 1.03%
D 7126 5034 207 207 2.90% 4.11%

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 14 4 84868 638.37 670 660 131.9
A 13 254 9605 67.81 670 660 131.9
A 10 83 9533 67.27 670 660 131.9
B 5 172 359238 2876.32 672 659 124.7
B 5 184 55973 443.7 672 659 124.7
B 0 245 55679 441.34 672 659 124.7
C 0 10 221457 1470.43 666 674 150.1
C 15 214 218939 1453.66 666 674 150.1
C 14 67 33959 221.68 666 674 150.1
D 8 195 873901 5508.96 655 639 158.5
D 12 16 358420 2257.06 655 639 158.5
D 2 250 225742 1420.06 655 639 158.5

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