ASTROSAT CZTI

Data Quality Report

Orbit 20151107_P01_126T01_9000000084_level2

Creation date: 2025-01-04T20:04:57.133912
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/AS1P01_126T01_9000000084cztM0_level2.fits modeM0/AS1P01_126T01_9000000084cztM0_level2_quad_clean.evt
Size (bytes)591,615,360789,497,280
Size564.2 MB 752.9 MB
Events in quadrant A3,295,7064,822,702
Events in quadrant B3,349,6504,955,162
Events in quadrant C3,322,4824,729,158
Events in quadrant D2,808,9104,266,205

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03790
B03790
C03790
D03810

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03318050
B03249370
C02969070
D03223710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015320
B015320
C015320
D015320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7495310421.390205%
B749533310.441610%
C749531050.140088%
D7495312841.713074%

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 117003 74950 0 0 0.00% 0.00%
B 117003 74948 0 0 0.00% 0.00%
C 117003 74951 0 0 0.00% 0.00%
D 117003 74935 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 7 110 3275 12.27 856 800 201.6
A 0 29 3004 10.93 856 800 201.6
A 12 45 2315 7.51 856 800 201.6
B 2 9 2833 13.03 883 843 152.8
B 2 8 2228 9.07 883 843 152.8
B 14 254 2180 8.75 883 843 152.8
C 12 241 2380 7.31 878 814 214.3
C 2 191 2358 7.2 878 814 214.3
C 1 81 2231 6.61 878 814 214.3
D 6 44 2231 7.78 801 737 192.0
D 11 82 2107 7.14 801 737 192.0
D 6 231 2087 7.03 801 737 192.0

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