ASTROSAT CZTI

Data Quality Report

Orbit 46459

Creation date: 2024-06-27T23:23:22.226492
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_037T01_9000006212_46459cztM0_level2.fits modeM0/AS1A13_037T01_9000006212_46459cztM0_level2_quad_clean.evt
Size (bytes)437,748,480108,175,680
Size417.5 MB 103.2 MB
Events in quadrant A5,929,203723,307
Events in quadrant B3,106,512755,069
Events in quadrant C2,840,543711,838
Events in quadrant D3,838,543645,721

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219231
B0135011
C0130491
D0158631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63001492.365079%
B6301620.983971%
C6301270.428503%
D6301891.412474%

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 7485 6301 6 6 0.08% 0.10%
B 7486 6302 14 14 0.19% 0.22%
C 7486 6302 6 6 0.08% 0.10%
D 7486 6302 63 63 0.84% 1.00%

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 10 83 3085441 20856.59 714 699 147.9
A 0 243 18209 118.39 714 699 147.9
A 2 79 15751 101.77 714 699 147.9
B 0 190 106959 763.18 717 697 139.2
B 15 201 51455 364.55 717 697 139.2
B 5 32 29744 208.62 717 697 139.2
C 3 233 37751 228.55 696 700 162.1
C 14 254 32165 194.09 696 700 162.1
C 9 54 25234 151.34 696 700 162.1
D 1 52 442579 2577.13 691 670 171.5
D 8 176 378453 2203.16 691 670 171.5
D 2 249 147189 854.47 691 670 171.5

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