ASTROSAT CZTI

Data Quality Report

Orbit 24969

Creation date: 2024-06-27T19:12:05.622833
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/AS1T03_200T01_9000003654_24969cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24969cztM0_level2_quad_clean.evt
Size (bytes)569,099,520137,350,080
Size542.7 MB 131.0 MB
Events in quadrant A3,182,064962,627
Events in quadrant B3,460,951994,391
Events in quadrant C4,290,599903,007
Events in quadrant D5,863,750849,083

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134902
B0143232
C0167412
D0217832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6463390.603435%
B6463891.377069%
C64635017.751818%
D646380012.378153%

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 7828 6464 0 0 0.00% 0.00%
B 7828 6464 19 19 0.24% 0.29%
C 7828 6464 352 352 4.50% 5.45%
D 7828 6464 600 600 7.66% 9.28%

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 4 2 15778 92.21 819 804 162.4
A 13 254 9964 56.41 819 804 162.4
A 0 226 6984 38.06 819 804 162.4
B 3 64 127648 839.31 826 809 151.1
B 5 172 43936 285.38 826 809 151.1
B 12 111 17408 109.84 826 809 151.1
C 7 247 1138612 6520.79 763 770 174.5
C 14 238 126316 719.48 763 770 174.5
C 0 10 45036 253.68 763 770 174.5
D 10 70 1103949 6179.13 748 727 178.5
D 1 52 951724 5326.52 748 727 178.5
D 7 238 698911 3910.52 748 727 178.5

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