ASTROSAT CZTI

Data Quality Report

Orbit 09261

Creation date: 2024-06-27T15:43:27.373017
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/AS1A03_062T04_9000001298_09261cztM0_level2.evt modeM0/AS1A03_062T04_9000001298_09261cztM0_level2_quad_clean.evt
Size (bytes)423,820,80076,731,840
Size404.2 MB 73.2 MB
Events in quadrant A4,045,982479,662
Events in quadrant B2,796,387496,659
Events in quadrant C2,866,734484,743
Events in quadrant D2,738,432463,650

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016757698
B012475354
C012490326
D012566400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01204
B01202
C01196
D01204

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0162
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56631131.995409%
B5719510.891764%
C5737250.435768%
D5703520.911801%

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 7064 5865 45 45 0.64% 0.77%
B 7064 5871 1 1 0.01% 0.02%
C 7064 5874 4 4 0.06% 0.07%
D 7064 5869 13 13 0.18% 0.22%

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 5 1047119 7462.3 686 673 140.2
A 13 251 128273 909.93 686 673 140.2
A 4 2 106089 751.73 686 673 140.2
B 4 173 17637 126.98 702 685 133.5
B 0 214 16165 115.96 702 685 133.5
B 12 111 13924 99.17 702 685 133.5
C 9 68 187933 1196.11 680 684 156.5
C 14 234 22965 142.33 680 684 156.5
C 13 61 5124 28.36 680 684 156.5
D 2 136 92411 543.64 669 652 168.8
D 7 71 31213 181.06 669 652 168.8
D 12 233 22447 129.13 669 652 168.8

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