ASTROSAT CZTI

Data Quality Report

Orbit 16474

Creation date: 2024-06-27T17:23:08.401815
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_007T03_9000002436_16474cztM0_level2.evt modeM0/AS1C04_007T03_9000002436_16474cztM0_level2_quad_clean.evt
Size (bytes)459,345,60087,275,520
Size438.1 MB 83.2 MB
Events in quadrant A3,333,683559,762
Events in quadrant B3,326,348573,599
Events in quadrant C3,677,675545,971
Events in quadrant D3,154,905533,242

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138952
B0138511
C0149441
D0135771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61701432.317666%
B6170841.361426%
C6170901.458671%
D6170711.150729%

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 7121 6171 33 33 0.46% 0.53%
B 7121 6171 4 4 0.06% 0.06%
C 7121 6172 0 0 0.00% 0.00%
D 7121 6171 32 32 0.45% 0.52%

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 15 174 413540 2660.14 760 745 155.2
A 0 226 6489 37.02 760 745 155.2
A 12 194 5551 30.97 760 745 155.2
B 3 209 79359 533.02 766 748 147.5
B 15 35 58124 389.04 766 748 147.5
B 0 198 55414 370.66 766 748 147.5
C 3 233 596804 3469.14 731 737 171.8
C 14 238 114493 662.07 731 737 171.8
C 7 247 104668 604.88 731 737 171.8
D 1 52 150879 830.76 738 718 180.8
D 2 33 95148 522.43 738 718 180.8
D 2 120 46560 253.62 738 718 180.8

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