ASTROSAT CZTI

Data Quality Report

Orbit 19086

Creation date: 2024-06-27T17:58:53.224713
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_046T01_9000002834_19086cztM0_level2.evt modeM0/AS1A05_046T01_9000002834_19086cztM0_level2_quad_clean.evt
Size (bytes)2,317,950,720374,368,320
Size2.2 GB 357.0 MB
Events in quadrant A15,382,1112,287,560
Events in quadrant B17,798,9512,331,919
Events in quadrant C16,678,5452,269,593
Events in quadrant D18,136,3242,206,704

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06640
B06640
C06640
D06640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0671477
B0731286
C0699446
D0755916

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A326346061.856959%
B326359022.763904%
C326358082.475869%
D326359082.782289%

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 38060 32641 11 11 0.03% 0.03%
B 38061 32643 166 166 0.44% 0.51%
C 38061 32642 74 74 0.19% 0.23%
D 38061 32643 337 337 0.89% 1.03%

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 9 143 55239 64.0 3965 3864 802.7
A 15 174 50697 58.34 3965 3864 802.7
A 13 254 40538 45.69 3965 3864 802.7
B 3 112 920764 1209.76 3945 3835 757.9
B 10 245 473722 619.95 3945 3835 757.9
B 7 220 393726 514.41 3945 3835 757.9
C 0 207 610086 673.11 3824 3846 900.6
C 14 238 584266 644.45 3824 3846 900.6
C 3 233 572751 631.66 3824 3846 900.6
D 7 238 1646435 1750.46 3866 3759 938.4
D 1 52 980059 1040.36 3866 3759 938.4
D 11 176 761750 807.73 3866 3759 938.4

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