ASTROSAT CZTI

Data Quality Report

Orbit 16972

Creation date: 2024-06-27T17:30:13.328490
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/AS1A05_188T01_9000002520_16972cztM0_level2.evt modeM0/AS1A05_188T01_9000002520_16972cztM0_level2_quad_clean.evt
Size (bytes)1,641,052,800229,072,320
Size1.5 GB 218.5 MB
Events in quadrant A8,308,6171,510,561
Events in quadrant B9,362,4001,528,477
Events in quadrant C10,817,2041,469,669
Events in quadrant D20,019,5191,209,373

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0368193
B0394623
C0438315
D0715923

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A176772741.550037%
B176783141.776219%
C176773311.872490%
D17677416923.584319%

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 19538 17681 97 97 0.50% 0.55%
B 19539 17682 82 82 0.42% 0.46%
C 19538 17681 2 2 0.01% 0.01%
D 19538 17681 2904 2904 14.86% 16.42%

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 15 174 325123 770.11 2071 2025 419.5
A 12 189 19273 41.11 2071 2025 419.5
A 0 226 18512 39.3 2071 2025 419.5
B 3 64 412765 1047.77 2074 2023 392.0
B 15 35 301007 762.68 2074 2023 392.0
B 3 209 131664 330.7 2074 2023 392.0
C 3 233 2642569 5682.9 1992 2005 464.7
C 14 238 306634 655.61 1992 2005 464.7
C 0 207 77261 161.96 1992 2005 464.7
D 1 52 12956260 30410.04 1753 1699 426.0
D 2 152 173332 402.9 1753 1699 426.0
D 10 70 124217 287.6 1753 1699 426.0

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