ASTROSAT CZTI

Data Quality Report

Orbit 18984

Creation date: 2024-06-27T17:57:31.972617
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/AS1A05_166T04_9000002826_18984cztM0_level2.evt modeM0/AS1A05_166T04_9000002826_18984cztM0_level2_quad_clean.evt
Size (bytes)675,740,16090,192,960
Size644.4 MB 86.0 MB
Events in quadrant A3,468,679562,031
Events in quadrant B4,444,980566,531
Events in quadrant C3,787,689553,921
Events in quadrant D8,254,644525,397

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152751
B0181081
C0156731
D0298071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7521420.558436%
B75222533.363467%
C7522791.050253%
D7522110414.676948%

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 8096 7522 0 0 0.00% 0.00%
B 8097 7523 89 89 1.10% 1.18%
C 8097 7523 1 1 0.01% 0.01%
D 8097 7523 778 778 9.61% 10.34%

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 13 254 8565 41.7 899 878 184.3
A 0 226 7829 37.71 899 878 184.3
A 3 137 6979 33.1 899 878 184.3
B 3 112 645475 3729.27 891 867 172.9
B 7 220 206860 1191.74 891 867 172.9
B 0 197 30382 170.75 891 867 172.9
C 3 233 241306 1181.08 866 873 203.6
C 14 238 134537 656.6 866 873 203.6
C 0 207 20538 96.6 866 873 203.6
D 7 238 4214739 20587.31 836 810 204.7
D 12 218 339112 1652.79 836 810 204.7
D 9 68 325653 1587.03 836 810 204.7

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