ASTROSAT CZTI

Data Quality Report

Orbit 51293

Creation date: 2025-03-23T07:09:35.382167
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/AS1C07_001T01_9000006454_51293cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51293cztM0_level2_quad_clean.evt
Size (bytes)818,193,60088,715,520
Size780.3 MB 84.6 MB
Events in quadrant A6,440,694579,402
Events in quadrant B5,409,662673,144
Events in quadrant C8,528,592467,635
Events in quadrant D9,400,336506,860

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237932
B0206392
C0300282
D0325012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65826409.723488%
B65833895.909160%
C6583194429.530609%
D6583117217.803433%

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 8827 6584 366 366 4.15% 5.56%
B 8828 6585 205 205 2.32% 3.11%
C 8828 6585 1704 1704 19.30% 25.88%
D 8828 6585 1574 1574 17.83% 23.90%

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 12 3 1601390 9569.26 668 652 167.3
A 12 250 538833 3217.26 668 652 167.3
A 13 248 523810 3127.45 668 652 167.3
B 10 254 1174561 8160.08 684 661 143.9
B 5 172 573724 3983.51 684 661 143.9
B 7 252 208670 1445.92 684 661 143.9
C 4 12 5620234 35224.25 577 572 159.5
C 4 5 208491 1303.24 577 572 159.5
C 13 3 78281 487.08 577 572 159.5
D 8 176 5038120 27758.36 633 610 181.5
D 2 216 517972 2850.84 633 610 181.5
D 2 249 295826 1626.74 633 610 181.5

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