ASTROSAT CZTI

Data Quality Report

Orbit 12958

Creation date: 2024-06-27T16:34:28.771562
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/AS1G08_035T01_9000001904_12958cztM0_level2.evt modeM0/AS1G08_035T01_9000001904_12958cztM0_level2_quad_clean.evt
Size (bytes)225,984,96024,949,440
Size215.5 MB 23.8 MB
Events in quadrant A1,769,250145,635
Events in quadrant B1,847,197135,676
Events in quadrant C1,304,521151,954
Events in quadrant D1,752,307143,041

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068562
B070751
C055141
D068471

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A248833913.625402%
B248845018.086817%
C24881285.144695%
D24881636.551447%

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 2754 2490 31 31 1.13% 1.24%
B 2754 2490 133 133 4.83% 5.34%
C 2754 2490 0 0 0.00% 0.00%
D 2754 2490 22 22 0.80% 0.88%

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 163229 2285.36 336 327 71.3
A 15 239 107192 1499.21 336 327 71.3
A 15 255 60322 841.67 336 327 71.3
B 4 239 547176 8572.28 310 302 63.8
B 3 64 53740 837.64 310 302 63.8
B 0 85 10406 158.38 310 302 63.8
C 0 207 8147 98.33 332 333 79.5
C 14 234 2681 29.55 332 333 79.5
C 13 61 2425 26.33 332 333 79.5
D 8 195 423539 5080.96 333 324 83.3
D 1 52 56806 678.1 333 324 83.3
D 2 234 9727 112.89 333 324 83.3

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