ASTROSAT CZTI

Data Quality Report

Orbit 25225

Creation date: 2024-06-27T19:15:14.739872
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_097T01_9000003692_25225cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25225cztM0_level2_quad_clean.evt
Size (bytes)1,745,579,520279,322,560
Size1.6 GB 266.4 MB
Events in quadrant A10,916,2271,763,286
Events in quadrant B11,264,9521,779,158
Events in quadrant C13,034,2731,691,232
Events in quadrant D16,109,1781,654,704

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0467940
B0479170
C0532000
D0634880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A228411580.691739%
B228422080.910603%
C228423941.724893%
D2284210074.408546%

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 26201 22845 0 0 0.00% 0.00%
B 26202 22846 7 7 0.03% 0.03%
C 26202 22846 0 0 0.00% 0.00%
D 26202 22846 644 644 2.46% 2.82%

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 33337 53.84 2832 2775 567.6
A 3 137 25697 40.38 2832 2775 567.6
A 0 226 24377 38.06 2832 2775 567.6
B 3 64 222946 411.89 2802 2732 534.6
B 12 111 66628 119.51 2802 2732 534.6
B 11 111 59258 105.73 2802 2732 534.6
C 7 247 2038294 3240.56 2686 2704 628.2
C 14 238 430600 681.19 2686 2704 628.2
C 2 16 61466 93.55 2686 2704 628.2
D 10 70 2560756 3651.8 2689 2630 700.5
D 1 52 1415114 2016.37 2689 2630 700.5
D 8 195 1241831 1769.0 2689 2630 700.5

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