ASTROSAT CZTI

Data Quality Report

Orbit 18528

Creation date: 2024-06-27T17:51:02.143758
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_187T03_9000002748_18528cztM0_level2.evt modeM0/AS1A05_187T03_9000002748_18528cztM0_level2_quad_clean.evt
Size (bytes)576,414,72084,150,720
Size549.7 MB 80.3 MB
Events in quadrant A3,152,753573,012
Events in quadrant B3,163,838586,933
Events in quadrant C3,162,489547,581
Events in quadrant D7,562,754412,782

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131531
B0131231
C0130751
D0266334

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6114841.373896%
B6115921.504497%
C61151111.815209%
D6114166527.232581%

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 7399 6114 8 8 0.11% 0.13%
B 7400 6115 1 1 0.01% 0.02%
C 7400 6115 0 0 0.00% 0.00%
D 7399 6114 1584 1584 21.41% 25.91%

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 63258 390.27 791 776 160.1
A 15 192 22609 136.37 791 776 160.1
A 13 254 10038 57.85 791 776 160.1
B 0 197 21230 136.5 793 775 149.9
B 12 111 17280 110.14 793 775 149.9
B 11 111 15018 95.05 793 775 149.9
C 14 238 118843 669.49 756 763 176.4
C 9 54 78457 440.51 756 763 176.4
C 13 61 5436 26.5 756 763 176.4
D 7 238 3097314 19045.61 671 652 162.6
D 1 52 945438 5810.78 671 652 162.6
D 13 168 865109 5316.73 671 652 162.6

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