ASTROSAT CZTI

Data Quality Report

Orbit 35059

Creation date: 2024-06-27T21:08:39.252976
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/AS1A10_057T01_9000005022_35059cztM0_level2.evt modeM0/AS1A10_057T01_9000005022_35059cztM0_level2_quad_clean.evt
Size (bytes)462,974,40084,225,600
Size441.5 MB 80.3 MB
Events in quadrant A2,637,232573,352
Events in quadrant B3,215,158564,326
Events in quadrant C2,834,164555,720
Events in quadrant D4,989,964500,693

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109413
B0126662
C0112422
D0184552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5081160.314899%
B50811983.896871%
C5081400.787247%
D50813847.557567%

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 7174 5082 9 9 0.13% 0.18%
B 7174 5082 88 88 1.23% 1.73%
C 7174 5082 40 40 0.56% 0.79%
D 7174 5082 388 388 5.41% 7.63%

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 10 83 81264 627.96 646 635 128.4
A 9 143 19656 148.14 646 635 128.4
A 15 174 18841 141.79 646 635 128.4
B 5 172 409604 3477.87 631 615 117.6
B 0 190 186302 1579.0 631 615 117.6
B 4 232 69043 581.88 631 615 117.6
C 15 214 212791 1472.99 629 634 144.0
C 0 10 135164 934.03 629 634 144.0
C 14 67 20280 136.4 629 634 144.0
D 8 195 1238402 8389.76 612 596 147.5
D 10 118 510511 3456.17 612 596 147.5
D 12 233 292862 1980.96 612 596 147.5

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