ASTROSAT CZTI

Data Quality Report

Orbit 24970

Creation date: 2024-06-27T19:12:06.544158
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/AS1T03_200T01_9000003654_24970cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24970cztM0_level2_quad_clean.evt
Size (bytes)469,497,600119,111,040
Size447.7 MB 113.6 MB
Events in quadrant A2,804,458825,140
Events in quadrant B3,229,435834,222
Events in quadrant C2,825,470799,214
Events in quadrant D4,961,939739,956

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120271
B0132271
C0121391
D0188991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5847220.376261%
B58481652.821477%
C5848801.367989%
D58485619.593023%

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 7197 5848 1 1 0.01% 0.02%
B 7198 5849 65 65 0.90% 1.11%
C 7198 5849 3 3 0.04% 0.05%
D 7198 5849 521 521 7.24% 8.91%

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 31237 212.58 717 705 143.6
A 13 254 8609 55.03 717 705 143.6
A 0 226 6174 38.08 717 705 143.6
B 3 64 343280 2604.0 709 693 131.6
B 5 172 28826 213.84 709 693 131.6
B 4 80 25908 191.66 709 693 131.6
C 14 238 112831 715.59 682 685 156.7
C 7 247 21918 135.48 682 685 156.7
C 0 10 17613 108.01 682 685 156.7
D 7 238 1129240 7033.04 666 646 160.5
D 1 52 957500 5962.81 666 646 160.5
D 2 244 134656 835.11 666 646 160.5

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