ASTROSAT CZTI

Data Quality Report

Orbit 02491

Creation date: 2024-06-27T14:18:37.252834
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/AS1T01_046T01_9000000372_02491cztM0_level2.fits modeM0/AS1T01_046T01_9000000372_02491cztM0_level2_quad_clean.evt
Size (bytes)299,462,40095,993,280
Size285.6 MB 91.5 MB
Events in quadrant A2,543,862643,266
Events in quadrant B2,645,590659,525
Events in quadrant C2,523,230624,282
Events in quadrant D2,922,433576,130

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116902
B0117981
C0116851
D0128661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5767380.658921%
B5767370.641581%
C5767170.294781%
D5767851.473903%

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 6912 5768 0 0 0.00% 0.00%
B 6912 5768 3 3 0.04% 0.05%
C 6912 5768 0 0 0.00% 0.00%
D 6912 5768 67 67 0.97% 1.16%

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 12 194 7396 49.43 660 644 136.6
A 0 226 7389 49.37 660 644 136.6
A 0 5 2088 10.57 660 644 136.6
B 4 200 25877 196.09 664 647 128.7
B 5 6 24265 183.56 664 647 128.7
B 15 85 14521 107.83 664 647 128.7
C 7 255 20639 136.03 634 634 147.1
C 10 65 8335 52.36 634 634 147.1
C 13 61 5713 34.53 634 634 147.1
D 13 223 268398 1804.53 630 613 148.4
D 7 67 120128 805.38 630 613 148.4
D 2 184 72939 487.38 630 613 148.4

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