ASTROSAT CZTI

Data Quality Report

Orbit 20190109_T03_070T07_9000002644_level2

Creation date: 2024-11-14T15:26:00.560667
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/AS1T03_070T07_9000002644cztM0_level2.fits modeM0/AS1T03_070T07_9000002644cztM0_level2_quad_clean.evt
Size (bytes)132,730,560101,223,360
Size126.6 MB 96.5 MB
Events in quadrant A828,226603,704
Events in quadrant B787,708565,153
Events in quadrant C682,102348,287
Events in quadrant D702,652529,774

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312800
B0348730
C0480360
D0357060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147352071.404818%
B147355163.501866%
C14735323221.934170%
D147354543.081099%

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 17220 14732 0 0 0.00% 0.00%
B 17220 14733 0 0 0.00% 0.00%
C 17220 14414 0 0 0.00% 0.00%
D 17220 14733 0 0 0.00% 0.00%

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 29 744 9.89 215 201 54.9
A 7 110 703 9.15 215 201 54.9
A 9 19 657 8.31 215 201 54.9
B 2 9 620 9.63 207 198 43.8
B 5 225 571 8.52 207 198 43.8
B 2 8 546 7.94 207 198 43.8
C 1 80 526 7.53 180 168 47.5
C 1 81 506 7.11 180 168 47.5
C 12 241 491 6.79 180 168 47.5
D 3 14 542 6.48 200 181 55.7
D 3 31 528 6.23 200 181 55.7
D 1 26 497 5.67 200 181 55.7

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