ASTROSAT CZTI

Data Quality Report

Orbit 19712

Creation date: 2024-06-27T18:05:52.632710
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/AS1A05_013T01_9000002944_19712cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19712cztM0_level2_quad_clean.evt
Size (bytes)447,327,36093,965,760
Size426.6 MB 89.6 MB
Events in quadrant A3,058,169617,677
Events in quadrant B3,334,543631,433
Events in quadrant C3,332,225586,218
Events in quadrant D3,395,736572,028

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132162
B0140032
C0138822
D0143442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6286190.302259%
B6286570.906777%
C6286871.384028%
D6286360.572701%

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 7541 6287 0 0 0.00% 0.00%
B 7541 6287 13 13 0.17% 0.21%
C 7541 6287 8 8 0.11% 0.13%
D 7541 6287 22 22 0.29% 0.35%

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 11 29 15829 94.83 790 776 158.7
A 0 226 6877 38.43 790 776 158.7
A 3 137 6190 34.11 790 776 158.7
B 7 220 80519 537.51 795 778 148.4
B 0 197 58328 387.93 795 778 148.4
B 4 171 36805 242.85 795 778 148.4
C 3 233 207654 1186.47 751 756 174.4
C 14 238 119825 682.81 751 756 174.4
C 7 247 51457 290.75 751 756 174.4
D 12 225 236209 1297.5 753 732 181.5
D 1 52 165668 908.81 753 732 181.5
D 12 218 90825 496.42 753 732 181.5

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