ASTROSAT CZTI

Data Quality Report

Orbit 32226

Creation date: 2024-06-27T20:37:48.892572
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/AS1A10_057T01_9000004692_32226cztM0_level2.evt modeM0/AS1A10_057T01_9000004692_32226cztM0_level2_quad_clean.evt
Size (bytes)572,820,48092,612,160
Size546.3 MB 88.3 MB
Events in quadrant A3,265,372609,752
Events in quadrant B5,301,687612,184
Events in quadrant C4,054,850514,380
Events in quadrant D4,258,515588,028

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142462
B0210731
C0165341
D0170591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68831271.845126%
B68832253.268923%
C6883141320.528839%
D68831882.731367%

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 6968 6884 0 0 0.00% 0.00%
B 6968 6884 2 2 0.03% 0.03%
C 6968 6883 1 1 0.01% 0.01%
D 6968 6884 99 99 1.42% 1.44%

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 13 6 14858 82.46 839 820 170.2
A 13 254 12432 68.21 839 820 170.2
A 3 137 8735 46.49 839 820 170.2
B 6 159 1897029 11842.7 827 805 160.1
B 0 245 48096 295.35 827 805 160.1
B 0 229 38495 235.39 827 805 160.1
C 14 254 488088 2874.89 722 727 169.5
C 14 238 480481 2830.02 722 727 169.5
C 3 233 227821 1339.6 722 727 169.5
D 8 195 447690 2299.46 807 783 194.4
D 14 52 379588 1949.05 807 783 194.4
D 2 250 167710 858.88 807 783 194.4

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