ASTROSAT CZTI

Data Quality Report

Orbit 20250409_A13_037T05_9000006460_level2

Creation date: 2025-04-23T01:37:49.959168
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/AS1A13_037T05_9000006460cztM0_level2.fits modeM0/AS1A13_037T05_9000006460cztM0_level2_quad_clean.evt
Size (bytes)4,373,758,0802,115,463,680
Size4.1 GB 2.0 GB
Events in quadrant A25,097,3387,015,212
Events in quadrant B25,005,2747,623,172
Events in quadrant C23,149,0326,284,782
Events in quadrant D22,126,3206,151,797

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06330
B06340
C06350
D06340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019217550
B015539470
C017254760
D016984180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108200
B0109700
C0109550
D0108190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5397517452913.808034%
B540103441178.168257%
C5399709186317.012612%
D539905496579.197359%

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 633787 538986 0 0 0.00% 0.00%
B 633788 540071 0 0 0.00% 0.00%
C 633788 521306 0 0 0.00% 0.00%
D 633788 539355 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 14 188 26175 9.35 6650 6156 2139.9
A 9 255 25266 8.93 6650 6156 2139.9
A 14 95 21327 7.09 6650 6156 2139.9
B 2 9 28621 14.46 6640 6264 1546.0
B 2 8 25875 12.69 6640 6264 1546.0
B 9 173 20512 9.22 6640 6264 1546.0
C 15 127 18315 6.12 6230 5689 2061.9
C 7 111 17924 5.93 6230 5689 2061.9
C 7 221 17918 5.93 6230 5689 2061.9
D 6 218 28045 10.58 6354 5644 2117.8
D 3 30 21440 7.46 6354 5644 2117.8
D 15 11 20072 6.81 6354 5644 2117.8

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