ASTROSAT CZTI

Data Quality Report

Orbit 44720

Creation date: 2024-06-27T23:05:42.335919
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_009T01_9000006016_44720cztM0_level2.fits modeM0/AS1A13_009T01_9000006016_44720cztM0_level2_quad_clean.evt
Size (bytes)621,313,920107,763,840
Size592.5 MB 102.8 MB
Events in quadrant A5,277,835762,334
Events in quadrant B3,547,276807,922
Events in quadrant C3,208,829775,561
Events in quadrant D10,454,171457,688

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211992
B0149472
C0140292
D0356202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65892774.203976%
B65901702.579666%
C6590661.001517%
D6590249237.814871%

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 8999 6591 17 17 0.19% 0.26%
B 9000 6592 29 29 0.32% 0.44%
C 9000 6592 15 15 0.17% 0.23%
D 9000 6592 2157 2157 23.97% 32.72%

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 10 83 2076246 12551.5 792 774 165.4
A 13 248 67908 406.0 792 774 165.4
A 15 223 55951 333.69 792 774 165.4
B 5 255 96135 604.92 798 773 157.6
B 0 219 77558 487.08 798 773 157.6
B 0 189 69986 439.04 798 773 157.6
C 14 254 71211 380.55 786 792 185.0
C 12 250 26270 137.69 786 792 185.0
C 0 207 20341 105.65 786 792 185.0
D 11 241 4375046 26477.29 658 641 165.2
D 3 13 1020401 6172.38 658 641 165.2
D 1 52 1018731 6162.27 658 641 165.2

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