ASTROSAT CZTI

Data Quality Report

Orbit 37733

Creation date: 2024-06-27T21:43:45.661073
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/AS1A11_106T02_9000005344_37733cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37733cztM0_level2_quad_clean.evt
Size (bytes)734,613,12058,988,160
Size700.6 MB 56.3 MB
Events in quadrant A8,009,914266,822
Events in quadrant B2,630,882411,102
Events in quadrant C2,559,393410,340
Events in quadrant D8,701,098336,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271922
B0112031
C0107761
D0293131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5135217642.375852%
B5135581.129503%
C5135300.584226%
D5135239846.699124%

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 6808 5136 2145 2145 31.51% 41.76%
B 6808 5135 51 51 0.75% 0.99%
C 6808 5135 28 28 0.41% 0.55%
D 6808 5135 2461 2461 36.15% 47.93%

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 15 222 6266407 79489.15 384 376 78.8
A 10 83 170527 2158.49 384 376 78.8
A 9 143 55721 702.09 384 376 78.8
B 5 255 148954 1354.35 569 554 109.6
B 5 172 120251 1092.4 569 554 109.6
B 4 232 38779 348.85 569 554 109.6
C 15 214 216724 1663.84 558 560 129.9
C 0 10 92606 708.49 558 560 129.9
C 14 254 23177 174.08 558 560 129.9
D 12 227 4599936 44305.22 426 414 103.8
D 2 249 1926933 18557.33 426 414 103.8
D 5 222 102140 979.88 426 414 103.8

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