ASTROSAT CZTI

Data Quality Report

Orbit 34282

Creation date: 2022-01-30T11:51:15.442460
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/AS1T04_086T01_9000004890_34282cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34282cztM0_level2_quad_clean.evt
Size (bytes)568,906,56080,133,120
Size542.6 MB 76.4 MB
Events in quadrant A2,667,184525,084
Events in quadrant B3,856,369519,915
Events in quadrant C2,990,951540,328
Events in quadrant D7,320,819434,096

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117943
B0151702
C0122302
D0256542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5818100.171880%
B58182734.692334%
C581840.068752%
D5818137823.685115%

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 7190 5819 4 4 0.06% 0.07%
B 7190 5819 190 190 2.64% 3.27%
C 7190 5819 2 2 0.03% 0.03%
D 7190 5819 1213 1213 16.87% 20.85%

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 9 143 33469 243.32 671 657 134.9
A 10 83 27021 195.5 671 657 134.9
A 13 6 10758 74.9 671 657 134.9
B 5 172 879468 6919.15 660 644 127.0
B 0 229 169455 1329.08 660 644 127.0
B 4 251 70406 549.25 660 644 127.0
C 15 214 256722 1673.46 661 665 153.0
C 1 128 96066 623.49 661 665 153.0
C 0 10 24398 155.1 661 665 153.0
D 7 223 2563465 18169.14 580 564 141.1
D 8 195 898072 6362.69 580 564 141.1
D 13 249 625551 4430.71 580 564 141.1

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