ASTROSAT CZTI

Data Quality Report

Orbit 21707

Creation date: 2024-06-27T18:31:24.787883
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_039T03_9000003214_21707cztM0_level2.evt modeM0/AS1A07_039T03_9000003214_21707cztM0_level2_quad_clean.evt
Size (bytes)659,880,000117,377,280
Size629.3 MB 111.9 MB
Events in quadrant A6,671,364769,115
Events in quadrant B3,182,793824,573
Events in quadrant C6,533,061757,241
Events in quadrant D3,178,724770,471

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025116996
B013798349
C024298571
D014066405

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01304
B01304
C01295
D01282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61954106.618241%
B6225620.995984%
C62055578.976632%
D6221681.093072%

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 7438 6224 233 233 3.13% 3.74%
B 7439 6240 19 19 0.26% 0.30%
C 7438 6231 83 83 1.12% 1.33%
D 7438 6239 31 31 0.42% 0.50%

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 15 236 3803955 25750.45 730 716 147.7
A 10 253 27947 184.37 730 716 147.7
A 6 16 13659 87.63 730 716 147.7
B 3 64 167151 1179.33 746 727 141.1
B 0 189 33348 231.16 746 727 141.1
B 0 230 24277 166.88 746 727 141.1
C 8 208 3679993 22773.87 698 702 161.6
C 14 238 109362 672.58 698 702 161.6
C 10 23 19539 116.6 698 702 161.6
D 1 52 156044 902.45 716 694 172.1
D 12 235 147806 854.59 716 694 172.1
D 2 136 55494 318.34 716 694 172.1

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