ASTROSAT CZTI

Data Quality Report

Orbit 16750

Creation date: 2024-06-27T17:27:11.745070
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_202T01_9000002484_16750cztM0_level2.evt modeM0/AS1A05_202T01_9000002484_16750cztM0_level2_quad_clean.evt
Size (bytes)563,296,320119,954,880
Size537.2 MB 114.4 MB
Events in quadrant A3,258,629811,695
Events in quadrant B3,644,921818,014
Events in quadrant C3,411,655781,219
Events in quadrant D6,266,538731,050

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145063
B0155282
C0148612
D0237612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7052390.553035%
B7052851.205332%
C7052690.978446%
D70525307.515598%

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 7643 7054 0 0 0.00% 0.00%
B 7643 7054 14 14 0.18% 0.20%
C 7643 7054 2 2 0.03% 0.03%
D 7643 7054 357 357 4.67% 5.06%

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 1 23186 132.43 838 821 168.9
A 15 174 15876 89.15 838 821 168.9
A 0 226 7351 38.67 838 821 168.9
B 15 35 142704 891.65 841 820 159.1
B 0 189 86021 535.43 841 820 159.1
B 0 197 35874 220.29 841 820 159.1
C 3 233 139555 752.08 800 804 184.5
C 14 238 124881 672.54 800 804 184.5
C 0 207 28693 151.17 800 804 184.5
D 1 52 1558731 8189.09 783 759 190.2
D 2 16 1269374 6668.16 783 759 190.2
D 15 0 235610 1234.44 783 759 190.2

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