ASTROSAT CZTI

Data Quality Report

Orbit 01407

Creation date: 2024-06-27T14:12:13.505629
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/AS1G04_003T01_9000000234_01407cztM0_level2.evt modeM0/AS1G04_003T01_9000000234_01407cztM0_level2_quad_clean.evt
Size (bytes)1,124,426,88095,952,960
Size1.0 GB 91.5 MB
Events in quadrant A10,703,396599,988
Events in quadrant B8,453,548626,823
Events in quadrant C7,440,230617,909
Events in quadrant D7,027,103608,457

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0363472
B0296601
C0266951
D0255671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64883104.778052%
B6488460.709001%
C648820.030826%
D6488480.739827%

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 6873 6489 1472 1472 21.42% 22.68%
B 6873 6489 430 430 6.26% 6.63%
C 6873 6489 188 188 2.74% 2.90%
D 6873 6489 223 223 3.24% 3.44%

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 15 127 3232728 6915.41 1931 1945 467.2
A 0 36 21055 40.9 1931 1945 467.2
A 4 32 17107 32.45 1931 1945 467.2
B 8 4 344620 702.54 2042 2057 487.6
B 12 52 141357 285.68 2042 2057 487.6
B 6 53 130090 262.58 2042 2057 487.6
C 15 241 247558 483.23 1829 1894 508.4
C 3 111 24038 43.56 1829 1894 508.4
C 3 79 22286 40.11 1829 1894 508.4
D 2 88 168848 313.01 1773 1830 533.6
D 9 53 55818 101.18 1773 1830 533.6
D 13 169 51333 92.77 1773 1830 533.6

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