ASTROSAT CZTI

Data Quality Report

Orbit 42809

Creation date: 2024-06-27T22:44:31.524998
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_001T12_9000005826_42809cztM0_level2.fits modeM0/AS1C07_001T12_9000005826_42809cztM0_level2_quad_clean.evt
Size (bytes)281,943,36084,090,240
Size268.9 MB 80.2 MB
Events in quadrant A2,617,536562,380
Events in quadrant B2,714,112570,211
Events in quadrant C2,402,024555,461
Events in quadrant D2,316,945511,614

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108579
B01156515
C01038620
D01073416

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4947140.283000%
B4946891.799434%
C4944200.404531%
D4948601.212611%

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 7075 4951 5 5 0.07% 0.10%
B 7075 4951 65 65 0.92% 1.31%
C 7075 4949 20 20 0.28% 0.40%
D 7075 4951 58 58 0.82% 1.17%

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 536003 4902.08 527 517 109.2
A 12 189 28047 252.02 527 517 109.2
A 13 248 7536 64.26 527 517 109.2
B 0 229 371745 3703.14 525 510 100.2
B 5 172 98627 978.73 525 510 100.2
B 4 171 55334 546.88 525 510 100.2
C 15 214 197966 1637.69 516 519 120.6
C 4 254 129878 1072.95 516 519 120.6
C 14 254 26480 215.33 516 519 120.6
D 13 249 157100 1265.44 509 496 123.8
D 2 120 48055 384.3 509 496 123.8
D 1 52 34622 275.76 509 496 123.8

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