ASTROSAT CZTI

Data Quality Report

Orbit 11482

Creation date: 2024-06-27T16:13:36.670777
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/AS1A04_107T01_9000001684_11482cztM0_level2.evt modeM0/AS1A04_107T01_9000001684_11482cztM0_level2_quad_clean.evt
Size (bytes)769,034,88093,432,960
Size733.4 MB 89.1 MB
Events in quadrant A8,933,672551,052
Events in quadrant B5,627,499573,886
Events in quadrant C3,270,537612,256
Events in quadrant D4,966,724584,263

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0316192
B0216711
C0149041
D0198021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7285141219.382292%
B72857029.636239%
C7285220.301990%
D72852653.637612%

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 7531 7287 988 988 13.12% 13.56%
B 7531 7287 366 366 4.86% 5.02%
C 7531 7287 3 3 0.04% 0.04%
D 7531 7287 182 182 2.42% 2.50%

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 5610126 34995.52 789 770 160.3
A 9 143 77852 480.89 789 770 160.3
A 1 162 71833 443.34 789 770 160.3
B 4 239 1228449 7896.84 814 797 155.5
B 3 64 631374 4056.17 814 797 155.5
B 15 204 209141 1340.17 814 797 155.5
C 14 234 26626 133.76 828 832 192.8
C 3 9 10310 49.15 828 832 192.8
C 13 61 6075 27.19 828 832 192.8
D 1 52 736659 3744.94 815 793 196.5
D 10 253 414214 2103.97 815 793 196.5
D 2 120 144123 729.43 815 793 196.5

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