ASTROSAT CZTI

Data Quality Report

Orbit 11750

Creation date: 2024-06-27T16:17:57.110809
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/AS1G08_060T01_9000001736_11750cztM0_level2.evt modeM0/AS1G08_060T01_9000001736_11750cztM0_level2_quad_clean.evt
Size (bytes)536,008,320106,626,240
Size511.2 MB 101.7 MB
Events in quadrant A3,945,750709,572
Events in quadrant B4,473,981700,082
Events in quadrant C2,845,041707,488
Events in quadrant D4,533,845664,986

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161102
B0178432
C0130472
D0178462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6401991.546633%
B64015017.826902%
C640180.124980%
D64012343.655679%

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 7462 6403 17 17 0.23% 0.27%
B 7462 6403 242 242 3.24% 3.78%
C 7462 6403 0 0 0.00% 0.00%
D 7462 6403 152 152 2.04% 2.37%

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 700888 4626.83 740 725 151.3
A 1 162 97249 637.85 740 725 151.3
A 13 248 92708 607.84 740 725 151.3
B 4 239 842000 6015.62 729 712 139.9
B 10 16 571678 4082.68 729 712 139.9
B 15 204 86802 615.59 729 712 139.9
C 12 4 7959 42.94 727 728 168.4
C 13 61 5398 27.73 727 728 168.4
C 14 234 2204 8.76 727 728 168.4
D 8 195 612836 3556.78 711 689 172.1
D 1 52 506885 2941.17 711 689 172.1
D 13 137 218556 1265.88 711 689 172.1

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