ASTROSAT CZTI

Data Quality Report

Orbit 08268

Creation date: 2024-06-27T15:30:21.320164
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/AS1G06_136T01_9000001148_08268cztM0_level2.evt modeM0/AS1G06_136T01_9000001148_08268cztM0_level2_quad_clean.evt
Size (bytes)548,732,16095,414,400
Size523.3 MB 91.0 MB
Events in quadrant A3,900,083574,454
Events in quadrant B4,024,649587,348
Events in quadrant C3,881,168588,974
Events in quadrant D4,257,996571,212

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171193
B0172702
C0170552
D0182672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81691181.444485%
B81691551.897417%
C81691131.383278%
D81691672.044314%

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 9339 8171 15 15 0.16% 0.18%
B 9339 8171 1 1 0.01% 0.01%
C 9339 8171 8 8 0.09% 0.10%
D 9339 8171 47 47 0.50% 0.58%

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 0 254 59915 286.93 996 971 205.4
A 15 234 12875 57.95 996 971 205.4
A 0 226 9238 40.24 996 971 205.4
B 11 51 66820 336.62 1005 981 195.6
B 0 214 31237 154.69 1005 981 195.6
B 12 111 21579 105.31 1005 981 195.6
C 9 54 68891 297.36 978 980 228.4
C 13 61 7354 27.91 978 980 228.4
C 3 202 2502 6.66 978 980 228.4
D 8 230 210548 894.64 974 947 234.3
D 1 52 174228 739.62 974 947 234.3
D 13 105 54411 228.2 974 947 234.3

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