ASTROSAT CZTI

Data Quality Report

Orbit 15749

Creation date: 2024-06-27T17:12:59.773201
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/AS1T02_088T01_9000002332_15749cztM0_level2.evt modeM0/AS1T02_088T01_9000002332_15749cztM0_level2_quad_clean.evt
Size (bytes)452,436,48065,496,960
Size431.5 MB 62.5 MB
Events in quadrant A3,312,245387,838
Events in quadrant B3,351,628396,259
Events in quadrant C3,421,900376,337
Events in quadrant D3,173,294367,908

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138203
B0136992
C0138322
D0136312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6514570.875038%
B6514761.166718%
C65141061.627264%
D6514560.859687%

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 7735 6516 1 1 0.01% 0.02%
B 7735 6515 2 2 0.03% 0.03%
C 7735 6514 2 2 0.03% 0.03%
D 7735 6516 4 4 0.05% 0.06%

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 3 80 76410 455.34 829 813 166.0
A 4 2 23553 136.97 829 813 166.0
A 8 35 13013 73.48 829 813 166.0
B 12 111 18253 110.33 837 819 158.0
B 3 209 15938 95.68 837 819 158.0
B 11 111 15647 93.84 837 819 158.0
C 3 233 146773 782.25 800 807 186.6
C 14 238 126553 673.89 800 807 186.6
C 7 247 10176 50.21 800 807 186.6
D 1 52 79942 403.28 805 781 196.3
D 2 234 23974 118.15 805 781 196.3
D 5 51 21530 105.7 805 781 196.3

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