ASTROSAT CZTI

Data Quality Report

Orbit 17157

Creation date: 2024-06-27T17:32:57.023157
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_059T01_9000002546_17157cztM0_level2.evt modeM0/AS1T03_059T01_9000002546_17157cztM0_level2_quad_clean.evt
Size (bytes)582,189,12094,789,440
Size555.2 MB 90.4 MB
Events in quadrant A4,173,846580,110
Events in quadrant B4,132,203587,957
Events in quadrant C4,692,869553,133
Events in quadrant D4,059,126562,067

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180943
B0178804
C0192703
D0181933

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84413454.087193%
B84413904.620306%
C84414565.402204%
D84413203.791020%

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 8861 8442 1 1 0.01% 0.01%
B 8861 8443 0 0 0.00% 0.00%
C 8861 8442 0 0 0.00% 0.00%
D 8861 8442 12 12 0.14% 0.14%

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 12 189 73397 333.63 1059 1035 216.9
A 12 96 32998 147.37 1059 1035 216.9
A 0 226 9134 37.34 1059 1035 216.9
B 12 111 26209 120.53 1056 1030 208.9
B 11 111 22847 104.44 1056 1030 208.9
B 14 111 19964 90.63 1056 1030 208.9
C 3 233 562789 2303.99 1020 1027 243.8
C 14 238 150894 614.66 1020 1027 243.8
C 13 61 7304 25.74 1020 1027 243.8
D 13 249 83099 318.7 1046 1016 257.6
D 2 234 29271 109.7 1046 1016 257.6
D 12 235 18053 66.15 1046 1016 257.6

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