ASTROSAT CZTI

Data Quality Report

Orbit 31719

Creation date: 2024-06-27T20:31:54.472382
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_034T01_9000004632_31719cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31719cztM0_level2_quad_clean.evt
Size (bytes)734,745,600105,295,680
Size700.7 MB 100.4 MB
Events in quadrant A4,814,242671,931
Events in quadrant B7,212,249666,472
Events in quadrant C4,745,141661,605
Events in quadrant D4,968,150661,043

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192713
B0269163
C0190883
D0198673

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75704145.468956%
B756995212.577619%
C75703925.178336%
D75701231.624835%

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 8440 7573 172 172 2.04% 2.27%
B 8439 7572 483 483 5.72% 6.38%
C 8440 7573 85 85 1.01% 1.12%
D 8440 7573 17 17 0.20% 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 0 13 1168456 6113.57 943 922 191.0
A 13 254 13745 67.15 943 922 191.0
A 3 137 9739 46.17 943 922 191.0
B 6 159 2038656 11377.38 926 903 179.1
B 4 80 1272132 7097.65 926 903 179.1
B 0 229 117494 650.96 926 903 179.1
C 0 10 671089 3112.5 911 919 215.3
C 3 233 237191 1097.33 911 919 215.3
C 14 238 145865 673.18 911 919 215.3
D 8 195 1233696 5513.5 932 908 223.6
D 12 233 123097 546.48 932 908 223.6
D 2 250 59481 261.96 932 908 223.6

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