ASTROSAT CZTI

Data Quality Report

Orbit 41686

Creation date: 2024-06-27T22:31:30.430919
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/AS1A12_044T21_9000005688_41686cztM0_level2.fits modeM0/AS1A12_044T21_9000005688_41686cztM0_level2_quad_clean.evt
Size (bytes)892,615,680246,896,640
Size851.3 MB 235.5 MB
Events in quadrant A8,157,8961,649,998
Events in quadrant B6,905,4371,699,176
Events in quadrant C7,587,4061,595,225
Events in quadrant D9,187,8771,460,605

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0530
C0530
D0530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330514
B0313424
C0323534
D0383584

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15518240.154659%
B15518230.148215%
C155171160.747567%
D155175073.267384%

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 19757 15521 10 10 0.05% 0.06%
B 19757 15521 5 5 0.03% 0.03%
C 19756 15520 105 105 0.53% 0.68%
D 19756 15520 459 459 2.32% 2.96%

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 1385476 3915.61 1725 1687 353.4
A 15 223 42497 115.48 1725 1687 353.4
A 13 248 32127 86.13 1725 1687 353.4
B 0 190 61277 180.49 1707 1656 330.3
B 5 255 53516 156.99 1707 1656 330.3
B 0 245 47730 139.48 1707 1656 330.3
C 15 214 630965 1608.81 1677 1685 391.1
C 0 10 389925 992.57 1677 1685 391.1
C 15 159 18768 43.67 1677 1685 391.1
D 13 249 1678695 4134.31 1657 1607 405.7
D 2 249 507940 1248.2 1657 1607 405.7
D 2 120 294610 722.3 1657 1607 405.7

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