ASTROSAT CZTI

Data Quality Report

Orbit 19455

Creation date: 2024-06-27T18:03:06.197244
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/AS1A05_229T02_9000002890_19455cztM0_level2.evt modeM0/AS1A05_229T02_9000002890_19455cztM0_level2_quad_clean.evt
Size (bytes)510,799,68069,370,560
Size487.1 MB 66.2 MB
Events in quadrant A3,818,763416,844
Events in quadrant B3,646,598421,404
Events in quadrant C3,756,654402,166
Events in quadrant D3,799,167399,013

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153851
B0147531
C0152661
D0154041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66092343.540626%
B66091912.889998%
C66091902.874868%
D66091942.935391%

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 7784 6609 59 59 0.76% 0.89%
B 7784 6609 11 11 0.14% 0.17%
C 7784 6609 1 1 0.01% 0.02%
D 7784 6609 82 82 1.05% 1.24%

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 4 2 327949 1809.97 900 883 180.7
A 11 29 15399 80.33 900 883 180.7
A 13 254 8982 44.82 900 883 180.7
B 7 220 36395 210.82 890 870 168.5
B 0 198 30467 175.64 890 870 168.5
B 12 111 19209 108.83 890 870 168.5
C 9 221 166252 847.38 848 856 195.2
C 14 238 133107 677.56 848 856 195.2
C 3 233 129570 659.44 848 856 195.2
D 1 52 483415 2303.65 870 847 209.5
D 2 234 27495 127.21 870 847 209.5
D 7 96 17722 80.56 870 847 209.5

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