ASTROSAT CZTI

Data Quality Report

Orbit 23882

Creation date: 2024-06-27T18:59:44.051079
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_142T01_9000003540_23882cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23882cztM0_level2_quad_clean.evt
Size (bytes)501,393,60074,410,560
Size478.2 MB 71.0 MB
Events in quadrant A3,561,479465,950
Events in quadrant B3,754,558468,662
Events in quadrant C3,512,460436,526
Events in quadrant D3,921,830435,206

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146701
B0152171
C0143821
D0158871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6402981.530772%
B64031251.952210%
C64031342.092769%
D64031722.686241%

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 7687 6403 0 0 0.00% 0.00%
B 7688 6404 20 20 0.26% 0.31%
C 7688 6404 0 0 0.00% 0.00%
D 7688 6404 82 82 1.07% 1.28%

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 13 254 10369 51.69 924 908 183.0
A 0 226 8157 39.61 924 908 183.0
A 3 137 7278 34.8 924 908 183.0
B 0 197 71806 424.84 908 892 166.9
B 5 172 30411 176.85 908 892 166.9
B 15 33 27602 160.02 908 892 166.9
C 14 238 142071 724.46 860 870 194.9
C 0 10 12581 60.09 860 870 194.9
C 13 61 6063 26.64 860 870 194.9
D 12 233 284730 1336.71 884 859 212.4
D 1 52 181243 849.4 884 859 212.4
D 8 195 66512 309.15 884 859 212.4

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