ASTROSAT CZTI

Data Quality Report

Orbit 37888

Creation date: 2024-06-27T21:45:45.802474
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/AS1C07_001T12_9000005352_37888cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37888cztM0_level2_quad_clean.evt
Size (bytes)443,471,04078,848,640
Size422.9 MB 75.2 MB
Events in quadrant A2,888,100520,472
Events in quadrant B3,025,276523,893
Events in quadrant C2,914,853491,609
Events in quadrant D4,209,487447,174

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122745
B0129826
C0123313
D01657118

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01170
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5786160.276530%
B5784681.175657%
C5786440.760456%
D57832844.910946%

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 7099 5788 8 8 0.11% 0.14%
B 7099 5787 43 43 0.61% 0.74%
C 7099 5788 31 31 0.44% 0.54%
D 7099 5786 216 216 3.04% 3.73%

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 10 83 373940 2885.65 637 623 129.4
A 7 3 16657 123.94 637 623 129.4
A 13 6 13986 103.29 637 623 129.4
B 5 172 303430 2469.42 632 615 122.6
B 0 213 122604 994.81 632 615 122.6
B 4 81 22517 178.61 632 615 122.6
C 15 214 241337 1663.47 618 622 144.7
C 0 10 123407 848.51 618 622 144.7
C 14 254 120383 827.61 618 622 144.7
D 2 249 628822 4186.72 613 595 150.1
D 1 52 362747 2413.51 613 595 150.1
D 13 200 188523 1252.42 613 595 150.1

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