ASTROSAT CZTI

Data Quality Report

Orbit 06166

Creation date: 2024-06-27T15:03:39.324464
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/AS1A02_006T01_9000000802_06166cztM0_level2.evt modeM0/AS1A02_006T01_9000000802_06166cztM0_level2_quad_clean.evt
Size (bytes)462,355,200109,676,160
Size440.9 MB 104.6 MB
Events in quadrant A3,446,668724,048
Events in quadrant B3,490,971737,915
Events in quadrant C3,171,348712,465
Events in quadrant D3,438,183680,609

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146563
B0147442
C0140142
D0148812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67011922.865244%
B67011902.835398%
C67011151.716162%
D67011852.760782%

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 9341 6702 10 10 0.11% 0.15%
B 9341 6702 15 15 0.16% 0.22%
C 9341 6702 0 0 0.00% 0.00%
D 9341 6703 53 53 0.57% 0.79%

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 8 15 129314 753.29 838 820 170.6
A 0 50 64316 372.24 838 820 170.6
A 14 111 23249 131.49 838 820 170.6
B 3 64 113448 703.25 846 827 160.1
B 0 219 33784 205.8 846 827 160.1
B 4 81 27343 165.58 846 827 160.1
C 12 16 11824 59.4 805 810 185.4
C 1 16 10977 54.83 805 810 185.4
C 13 61 6410 30.2 805 810 185.4
D 13 169 288721 1485.38 798 773 193.9
D 8 195 34016 171.48 798 773 193.9
D 12 110 33522 168.94 798 773 193.9

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