ASTROSAT CZTI

Data Quality Report

Orbit 13682

Creation date: 2024-06-27T16:44:29.044871
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/AS1G08_070T01_9000002028_13682cztM0_level2.evt modeM0/AS1G08_070T01_9000002028_13682cztM0_level2_quad_clean.evt
Size (bytes)616,544,64093,193,920
Size588.0 MB 88.9 MB
Events in quadrant A4,017,861578,060
Events in quadrant B4,600,770608,842
Events in quadrant C4,185,549558,092
Events in quadrant D5,330,693525,781

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170154
B0185353
C0171853
D0210163

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79193384.268216%
B79194846.111883%
C79192643.333754%
D79193574.508145%

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 7975 7922 5 5 0.06% 0.06%
B 7975 7922 69 69 0.87% 0.87%
C 7975 7922 2 2 0.03% 0.03%
D 7975 7922 39 39 0.49% 0.49%

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 69 67265 315.27 1020 997 210.2
A 1 162 19869 89.78 1020 997 210.2
A 0 226 9094 38.52 1020 997 210.2
B 4 48 190062 955.44 1018 995 197.9
B 3 64 152101 763.61 1018 995 197.9
B 8 250 136604 685.29 1018 995 197.9
C 3 233 325081 1397.78 986 991 231.9
C 14 234 19759 80.94 986 991 231.9
C 13 61 7066 26.2 986 991 231.9
D 13 122 701423 2666.94 972 953 262.6
D 1 52 450631 1712.08 972 953 262.6
D 8 195 170725 646.38 972 953 262.6

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