ASTROSAT CZTI

Data Quality Report

Orbit 44273

Creation date: 2024-06-27T23:01:13.775713
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_077T01_9000005984_44273cztM0_level2.fits modeM0/AS1A13_077T01_9000005984_44273cztM0_level2_quad_clean.evt
Size (bytes)565,292,160106,683,840
Size539.1 MB 101.7 MB
Events in quadrant A6,921,527679,811
Events in quadrant B3,860,886763,193
Events in quadrant C3,418,364735,253
Events in quadrant D6,218,054596,746

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255171
B0159681
C0146281
D0230469

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A652986313.217951%
B65301632.496172%
C6530831.271057%
D652999215.193751%

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 7564 6531 535 535 7.07% 8.19%
B 7565 6532 45 45 0.59% 0.69%
C 7565 6531 18 18 0.24% 0.28%
D 7564 6531 720 720 9.52% 11.02%

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 15 223 2342838 14983.41 748 733 156.3
A 10 83 1599554 10228.32 748 733 156.3
A 0 243 28015 174.53 748 733 156.3
B 0 219 193633 1272.04 771 749 151.6
B 0 200 147312 966.56 771 749 151.6
B 7 221 87354 571.15 771 749 151.6
C 3 233 193044 1070.24 761 769 179.7
C 4 254 135390 749.33 761 769 179.7
C 14 254 95204 525.64 761 769 179.7
D 1 52 1986074 11075.82 716 697 179.3
D 13 249 236776 1317.01 716 697 179.3
D 12 233 183369 1019.07 716 697 179.3

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