ASTROSAT CZTI

Data Quality Report

Orbit 24494

Creation date: 2024-06-27T19:06:33.847792
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/AS1T03_183T01_9000003606_24494cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24494cztM0_level2_quad_clean.evt
Size (bytes)591,105,600122,964,480
Size563.7 MB 117.3 MB
Events in quadrant A6,220,087797,164
Events in quadrant B3,809,374851,785
Events in quadrant C3,278,858807,603
Events in quadrant D4,114,278774,883

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234292
B0160282
C0143952
D0170272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70775487.743394%
B70771331.879327%
C7077620.876077%
D70761882.656868%

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 7807 7078 246 246 3.15% 3.48%
B 7807 7078 26 26 0.33% 0.37%
C 7807 7078 1 1 0.01% 0.01%
D 7806 7077 107 107 1.37% 1.51%

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 14 111 3096198 19132.48 804 786 161.8
A 4 2 18720 110.85 804 786 161.8
A 13 254 11093 63.71 804 786 161.8
B 3 64 523187 3326.89 835 815 157.0
B 12 111 19203 117.11 835 815 157.0
B 11 111 16761 101.56 835 815 157.0
C 14 238 130782 694.96 802 806 187.0
C 2 16 15646 79.35 802 806 187.0
C 0 10 7446 35.5 802 806 187.0
D 12 218 563244 2915.47 794 768 192.9
D 1 52 360906 1866.7 794 768 192.9
D 8 195 134616 693.77 794 768 192.9

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