ASTROSAT CZTI

Data Quality Report

Orbit 10894

Creation date: 2024-06-27T16:05:18.357820
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_055T01_9000001574_10894cztM0_level2.evt modeM0/AS1A04_055T01_9000001574_10894cztM0_level2_quad_clean.evt
Size (bytes)470,226,24091,621,440
Size448.4 MB 87.4 MB
Events in quadrant A3,987,277579,050
Events in quadrant B3,810,840594,208
Events in quadrant C2,813,633600,191
Events in quadrant D3,209,466569,780

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159062
B0153931
C0125841
D0137291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61772453.966327%
B61772554.128218%
C6177540.874211%
D61771181.910312%

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 7192 6177 133 133 1.85% 2.15%
B 7192 6177 106 106 1.47% 1.72%
C 7192 6177 0 0 0.00% 0.00%
D 7192 6177 61 61 0.85% 0.99%

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 8 5 1163043 7901.28 726 711 147.1
A 8 6 9290 58.32 726 711 147.1
A 0 226 6584 39.92 726 711 147.1
B 4 239 893794 6404.77 728 709 139.4
B 0 214 36462 256.4 728 709 139.4
B 0 219 31672 222.05 728 709 139.4
C 14 234 5379 28.2 718 721 165.2
C 13 61 5312 27.8 718 721 165.2
C 8 222 4345 21.94 718 721 165.2
D 9 85 176726 1029.37 710 690 171.0
D 1 52 61667 356.56 710 690 171.0
D 5 222 59291 342.67 710 690 171.0

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