ASTROSAT CZTI

Data Quality Report

Orbit 19241

Creation date: 2024-06-27T18:00:33.031113
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/AS1C04_001T01_9000002846_19241cztM0_level2.evt modeM0/AS1C04_001T01_9000002846_19241cztM0_level2_quad_clean.evt
Size (bytes)774,918,720129,669,120
Size739.0 MB 123.7 MB
Events in quadrant A3,789,890871,275
Events in quadrant B4,110,878889,255
Events in quadrant C4,465,887866,930
Events in quadrant D10,546,195728,386

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170462
B0178793
C0186972
D0369732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8209911.108539%
B82092132.594713%
C82092242.728712%
D8209253630.892922%

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 8709 8212 0 0 0.00% 0.00%
B 8709 8212 25 25 0.29% 0.30%
C 8709 8212 13 13 0.15% 0.16%
D 8709 8211 2254 2254 25.88% 27.45%

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 11577 53.25 981 960 199.4
A 0 226 8345 37.04 981 960 199.4
A 3 137 8185 36.24 981 960 199.4
B 4 80 106740 559.3 985 956 189.1
B 7 220 98675 516.66 985 956 189.1
B 12 111 23352 118.41 985 956 189.1
C 3 233 482406 2163.93 953 956 222.5
C 14 238 146947 656.17 953 956 222.5
C 0 207 117569 524.13 953 956 222.5
D 5 222 7214829 35300.04 840 812 204.4
D 13 104 70027 338.69 840 812 204.4
D 1 52 66071 319.33 840 812 204.4

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