ASTROSAT CZTI

Data Quality Report

Orbit 40407

Creation date: 2024-06-27T22:15:43.467970
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/AS1A12_056T02_9000005538_40407cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40407cztM0_level2_quad_clean.evt
Size (bytes)406,028,160101,462,400
Size387.2 MB 96.8 MB
Events in quadrant A3,472,891697,161
Events in quadrant B3,344,825712,388
Events in quadrant C2,880,508681,293
Events in quadrant D4,859,835558,177

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139973
B0141442
C0122952
D0185652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6063921.517401%
B6063791.302985%
C606390.148441%
D606380113.211282%

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 9140 6065 67 67 0.73% 1.10%
B 9140 6065 43 43 0.47% 0.71%
C 9140 6065 1 1 0.01% 0.02%
D 9140 6065 241 241 2.64% 3.97%

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 518729 3755.52 670 657 137.9
A 13 248 288295 2085.1 670 657 137.9
A 9 143 33384 237.24 670 657 137.9
B 7 202 399431 3097.8 667 649 128.7
B 4 170 143661 1110.94 667 649 128.7
B 5 255 106510 822.35 667 649 128.7
C 15 214 259987 1681.54 658 664 154.2
C 12 249 25588 161.62 658 664 154.2
C 14 254 12472 76.57 658 664 154.2
D 12 227 1450403 9400.83 620 604 154.2
D 2 250 501268 3246.42 620 604 154.2
D 13 171 218593 1413.49 620 604 154.2

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