ASTROSAT CZTI

Data Quality Report

Orbit 21861

Creation date: 2024-06-27T18:33:10.591068
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/AS1A07_118T01_9000003232_21861cztM0_level2.evt modeM0/AS1A07_118T01_9000003232_21861cztM0_level2_quad_clean.evt
Size (bytes)577,411,20075,519,360
Size550.7 MB 72.0 MB
Events in quadrant A3,680,099460,468
Events in quadrant B4,016,695464,603
Events in quadrant C3,604,245459,074
Events in quadrant D5,679,524382,825

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158690
B0166690
C0155000
D0219290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74621642.197802%
B74622853.819351%
C74631922.572692%
D7463102513.734423%

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 7622 7462 4 4 0.05% 0.05%
B 7622 7463 77 77 1.01% 1.03%
C 7623 7463 0 0 0.00% 0.00%
D 7623 7464 630 630 8.26% 8.44%

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 5 16 92278 492.06 914 895 185.7
A 4 2 58312 309.17 914 895 185.7
A 13 254 13775 69.35 914 895 185.7
B 3 64 327875 1844.62 913 891 177.3
B 4 171 30790 168.67 913 891 177.3
B 12 111 21754 117.69 913 891 177.3
C 14 238 137613 651.82 883 891 209.8
C 8 128 11811 52.06 883 891 209.8
C 13 61 6190 25.26 883 891 209.8
D 1 52 2462810 12238.49 819 797 201.2
D 12 227 30612 148.21 819 797 201.2
D 2 234 29935 144.84 819 797 201.2

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