ASTROSAT CZTI

Data Quality Report

Orbit 07629

Creation date: 2024-06-27T15:22:07.608859
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/AS1T01_157T01_9000001050_07629cztM0_level2.evt modeM0/AS1T01_157T01_9000001050_07629cztM0_level2_quad_clean.evt
Size (bytes)195,661,44012,481,920
Size186.6 MB 11.9 MB
Events in quadrant A885,69764,692
Events in quadrant B878,65967,319
Events in quadrant C3,060,08160,301
Events in quadrant D984,04860,512

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035992
B036081
C0102591
D039821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1693150.886001%
B1693110.649734%
C169375544.595393%
D1693402.362670%

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 1693 1693 0 0 0.00% 0.00%
B 1693 1693 0 0 0.00% 0.00%
C 1693 1693 695 695 41.05% 41.05%
D 1693 1693 28 28 1.65% 1.65%

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 13 251 30824 666.26 218 213 45.9
A 0 128 12511 267.67 218 213 45.9
A 13 14 2709 54.33 218 213 45.9
B 5 255 11411 262.2 216 212 42.7
B 0 214 7411 168.55 216 212 42.7
B 15 204 5312 119.41 216 212 42.7
C 9 68 2260926 49772.86 191 191 45.4
C 4 254 38703 847.89 191 191 45.4
C 1 16 10361 223.91 191 191 45.4
D 2 152 52706 990.18 210 204 53.0
D 1 52 43833 822.83 210 204 53.0
D 2 14 43603 818.5 210 204 53.0

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