ASTROSAT CZTI

Data Quality Report

Orbit 18758

Creation date: 2024-06-27T17:54:27.665076
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_156T01_9000002804_18758cztM0_level2.evt modeM0/AS1A05_156T01_9000002804_18758cztM0_level2_quad_clean.evt
Size (bytes)475,680,96067,544,640
Size453.6 MB 64.4 MB
Events in quadrant A3,360,205408,865
Events in quadrant B3,447,866412,562
Events in quadrant C3,530,117395,021
Events in quadrant D3,642,670391,256

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138281
B0141471
C0143501
D0148352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6262781.245608%
B6263981.564745%
C62631061.692480%
D6262711.133823%

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 7537 6263 0 0 0.00% 0.00%
B 7538 6264 3 3 0.04% 0.05%
C 7538 6263 0 0 0.00% 0.00%
D 7537 6263 11 11 0.15% 0.18%

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 11 29 15325 84.14 868 854 172.0
A 13 254 8984 47.27 868 854 172.0
A 0 226 7602 39.24 868 854 172.0
B 0 197 37445 231.05 853 835 158.4
B 4 171 19781 119.57 853 835 158.4
B 12 111 18140 109.22 853 835 158.4
C 9 54 195839 1043.93 818 824 186.8
C 14 238 133190 708.57 818 824 186.8
C 0 207 10724 53.0 818 824 186.8
D 1 52 349606 1727.85 840 816 201.9
D 7 96 48346 235.45 840 816 201.9
D 7 38 35527 171.95 840 816 201.9

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