ASTROSAT CZTI

Data Quality Report

Orbit 15575

Creation date: 2024-06-27T17:10:24.429521
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_198T01_9000002308_15575cztM0_level2.evt modeM0/AS1A04_198T01_9000002308_15575cztM0_level2_quad_clean.evt
Size (bytes)444,398,40086,950,080
Size423.8 MB 82.9 MB
Events in quadrant A3,149,942559,467
Events in quadrant B3,286,926566,491
Events in quadrant C3,179,472540,229
Events in quadrant D3,423,781536,778

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128752
B0132831
C0129781
D0138241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6158751.217928%
B6158951.542709%
C6158941.526470%
D61581161.883728%

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 7469 6159 0 0 0.00% 0.00%
B 7469 6160 10 10 0.13% 0.16%
C 7469 6159 0 0 0.00% 0.00%
D 7469 6159 44 44 0.59% 0.71%

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 0 226 7396 40.51 818 802 162.8
A 12 194 6211 33.23 818 802 162.8
A 3 137 5019 25.9 818 802 162.8
B 3 64 63719 419.55 803 784 150.0
B 0 189 23851 153.77 803 784 150.0
B 0 214 21965 141.2 803 784 150.0
C 14 238 120550 668.61 777 783 179.1
C 3 233 20683 111.09 777 783 179.1
C 13 61 5558 26.66 777 783 179.1
D 15 0 146719 695.46 795 777 209.8
D 7 223 85814 405.23 795 777 209.8
D 7 38 44432 208.03 795 777 209.8

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