ASTROSAT CZTI

Data Quality Report

Orbit 17952

Creation date: 2024-06-27T17:43:02.672671
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/AS1T03_025T01_9000002670_17952cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17952cztM0_level2_quad_clean.evt
Size (bytes)586,923,840111,997,440
Size559.7 MB 106.8 MB
Events in quadrant A3,267,010749,459
Events in quadrant B3,431,762768,158
Events in quadrant C4,111,429721,448
Events in quadrant D6,470,791645,600

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149453
B0152492
C0172542
D0242622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7278160.219841%
B7278420.577082%
C72783584.918934%
D7278102014.014839%

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 7723 7279 0 0 0.00% 0.00%
B 7723 7279 3 3 0.04% 0.04%
C 7723 7279 168 168 2.18% 2.31%
D 7723 7279 835 835 10.81% 11.47%

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 15 174 14144 78.08 846 827 170.6
A 0 226 7031 36.37 846 827 170.6
A 3 137 6415 32.76 846 827 170.6
B 0 197 26966 161.05 855 833 162.3
B 0 190 24283 144.51 855 833 162.3
B 4 48 19842 117.14 855 833 162.3
C 9 160 488824 2539.01 816 820 192.2
C 9 176 286112 1484.33 816 820 192.2
C 14 238 126275 652.72 816 820 192.2
D 5 222 3199677 17264.57 762 739 185.3
D 13 168 85554 457.74 762 739 185.3
D 9 64 72074 384.99 762 739 185.3

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