ASTROSAT CZTI

Data Quality Report

Orbit 11400

Creation date: 2024-06-27T16:12:23.925236
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/AS1A04_022T04_9000001666_11400cztM0_level2.evt modeM0/AS1A04_022T04_9000001666_11400cztM0_level2_quad_clean.evt
Size (bytes)597,772,80075,957,120
Size570.1 MB 72.4 MB
Events in quadrant A5,334,099431,817
Events in quadrant B4,341,559449,178
Events in quadrant C3,235,385489,754
Events in quadrant D4,716,853440,006

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204053
B0174242
C0143572
D0186242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70196469.203590%
B70193575.086195%
C7019941.339222%
D70194215.998005%

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 8644 7021 315 315 3.64% 4.49%
B 8644 7021 121 121 1.40% 1.72%
C 8644 7021 0 0 0.00% 0.00%
D 8643 7020 254 254 2.94% 3.62%

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 8 5 2027344 12177.58 817 798 166.4
A 1 162 48977 289.51 817 798 166.4
A 1 178 26548 154.73 817 798 166.4
B 4 239 975166 6025.22 836 814 161.7
B 3 189 43901 266.44 836 814 161.7
B 15 204 23852 142.46 836 814 161.7
C 13 61 5929 26.34 829 833 193.4
C 14 234 3145 11.95 829 833 193.4
C 3 202 2060 6.34 829 833 193.4
D 1 52 860291 4398.0 808 784 195.4
D 10 253 246132 1255.42 808 784 195.4
D 13 249 228444 1164.91 808 784 195.4

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