ASTROSAT CZTI

Data Quality Report

Orbit 13998

Creation date: 2024-06-27T16:48:51.076169
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/AS1A04_038T02_9000002068_13998cztM0_level2.evt modeM0/AS1A04_038T02_9000002068_13998cztM0_level2_quad_clean.evt
Size (bytes)480,882,240122,875,200
Size458.6 MB 117.2 MB
Events in quadrant A2,998,163841,801
Events in quadrant B3,324,165853,750
Events in quadrant C3,089,037816,816
Events in quadrant D4,723,805768,919

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132433
B0140492
C0134142
D0182882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6318410.648940%
B6318651.028807%
C6318130.205761%
D63184366.900918%

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 7494 6320 1 1 0.01% 0.02%
B 7494 6320 12 12 0.16% 0.19%
C 7494 6320 5 5 0.07% 0.08%
D 7494 6320 454 454 6.06% 7.18%

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 14 111 68342 444.51 750 735 152.1
A 12 189 21934 139.38 750 735 152.1
A 1 162 12534 77.58 750 735 152.1
B 0 219 194172 1383.69 752 736 139.8
B 0 189 91692 650.63 752 736 139.8
B 3 64 31255 218.31 752 736 139.8
C 3 233 160642 963.8 719 722 165.9
C 14 220 107341 642.57 719 722 165.9
C 14 234 11808 66.81 719 722 165.9
D 13 104 755503 4320.43 698 678 174.7
D 7 80 578639 3308.11 698 678 174.7
D 10 157 288464 1647.22 698 678 174.7

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