ASTROSAT CZTI

Data Quality Report

Orbit 20843

Creation date: 2024-06-27T18:20:16.196093
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/AS1C04_001T01_9000003074_20843cztM0_level2.evt modeM0/AS1C04_001T01_9000003074_20843cztM0_level2_quad_clean.evt
Size (bytes)420,085,440112,317,120
Size400.6 MB 107.1 MB
Events in quadrant A2,851,237788,612
Events in quadrant B3,478,785767,976
Events in quadrant C2,769,502731,423
Events in quadrant D3,250,665730,992

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012117512
B014234545
C011956531
D013538550

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01146
C01164
D01164

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5477661.205039%
B54702254.113346%
C5467771.408451%
D54711021.864376%

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 7135 5538 0 0 0.00% 0.00%
B 7124 5520 128 128 1.80% 2.32%
C 7134 5519 0 0 0.00% 0.00%
D 7132 5526 46 46 0.64% 0.83%

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 2 79 18528 122.33 733 721 145.6
A 8 205 10105 64.46 733 721 145.6
A 6 16 6565 40.14 733 721 145.6
B 3 64 312219 2376.65 709 693 131.1
B 7 220 223543 1700.13 709 693 131.1
B 0 189 86886 657.57 709 693 131.1
C 14 238 110258 708.47 678 684 154.7
C 3 233 7675 45.2 678 684 154.7
C 13 61 4852 26.95 678 684 154.7
D 1 52 296245 1764.85 701 682 167.5
D 7 38 126194 749.45 701 682 167.5
D 9 1 87453 518.12 701 682 167.5

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