ASTROSAT CZTI

Data Quality Report

Orbit 02996

Creation date: 2024-06-27T14:23:13.169653
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/AS1G05_238T05_9000000418_02996cztM0_level2.evt modeM0/AS1G05_238T05_9000000418_02996cztM0_level2_quad_clean.evt
Size (bytes)544,455,36077,783,040
Size519.2 MB 74.2 MB
Events in quadrant A4,728,619511,810
Events in quadrant B6,106,217462,564
Events in quadrant C2,548,859521,404
Events in quadrant D2,762,083503,789

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174912
B0216051
C0107881
D0115741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50694488.838035%
B5069132726.178733%
C5069290.572105%
D5069731.440126%

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 7196 5070 365 365 5.07% 7.20%
B 7196 5070 1214 1214 16.87% 23.94%
C 7196 5070 25 25 0.35% 0.49%
D 7196 5070 68 68 0.94% 1.34%

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 9 1786746 15568.15 564 554 114.7
A 14 249 632089 5504.35 564 554 114.7
A 12 247 44033 378.96 564 554 114.7
B 15 204 3719942 37604.23 521 509 98.9
B 2 249 165202 1665.08 521 509 98.9
B 0 219 84967 853.89 521 509 98.9
C 0 219 266808 2055.95 559 562 129.5
C 6 80 34514 262.18 559 562 129.5
C 1 192 25890 195.58 559 562 129.5
D 7 80 110337 810.98 560 543 135.4
D 13 114 89538 657.35 560 543 135.4
D 12 1 68892 504.85 560 543 135.4

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