ASTROSAT CZTI

Data Quality Report

Orbit 20250207_T05_241T01_9000006446_level2

Creation date: 2025-02-12T12:52:57.676866
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/AS1T05_241T01_9000006446cztM0_level2.fits modeM0/AS1T05_241T01_9000006446cztM0_level2_quad_clean.evt
Size (bytes)2,711,520,0003,879,486,720
Size2.5 GB 3.6 GB
Events in quadrant A15,861,51424,833,410
Events in quadrant B15,290,00226,431,237
Events in quadrant C14,193,92420,921,747
Events in quadrant D13,452,95222,061,609

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03710
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010496410
B010621470
C013309430
D010630930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068780
B068780
C068780
D068780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A339445254157.487222%
B339434332819.804852%
C3394346793120.013022%
D339446289228.520354%

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 388081 339299 0 0 0.00% 0.00%
B 388081 339233 0 0 0.00% 0.00%
C 388081 335701 0 0 0.00% 0.00%
D 388081 338966 0 0 0.00% 0.00%

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 14 188 17000 9.72 4212 3905 1347.5
A 9 255 16313 9.21 4212 3905 1347.5
A 14 204 13807 7.35 4212 3905 1347.5
B 2 9 17090 14.12 4060 3855 937.2
B 2 8 15791 12.74 4060 3855 937.2
B 2 245 12131 8.83 4060 3855 937.2
C 7 221 12183 6.74 3844 3504 1288.6
C 2 31 11350 6.09 3844 3504 1288.6
C 6 64 11087 5.88 3844 3504 1288.6
D 6 218 17312 10.78 3883 3460 1284.9
D 3 30 13349 7.7 3883 3460 1284.9
D 14 31 11869 6.54 3883 3460 1284.9

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