ASTROSAT CZTI

Data Quality Report

Orbit 30894

Creation date: 2024-06-27T20:20:53.556742
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/AS1A10_071T28_9000004464_30894cztM0_level2.evt modeM0/AS1A10_071T28_9000004464_30894cztM0_level2_quad_clean.evt
Size (bytes)669,412,80082,877,760
Size638.4 MB 79.0 MB
Events in quadrant A3,862,048510,513
Events in quadrant B6,192,550506,260
Events in quadrant C3,937,574483,841
Events in quadrant D5,754,210467,657

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163234
B0240114
C0164454
D0222014

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77823534.536109%
B77825246.733488%
C77823854.947314%
D77824635.949627%

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 8417 7783 0 0 0.00% 0.00%
B 8417 7783 7 7 0.08% 0.09%
C 8417 7783 0 0 0.00% 0.00%
D 8417 7784 191 191 2.27% 2.45%

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 47 17418 82.12 994 972 200.3
A 13 254 13768 63.89 994 972 200.3
A 3 137 10515 47.65 994 972 200.3
B 6 159 2124871 11140.49 977 949 190.6
B 0 190 101169 525.68 977 949 190.6
B 6 36 49346 253.85 977 949 190.6
C 14 238 151630 675.94 946 948 222.9
C 3 233 47546 209.03 946 948 222.9
C 0 10 24888 107.39 946 948 222.9
D 1 52 648859 2866.31 949 925 226.1
D 8 195 638360 2819.87 949 925 226.1
D 12 218 617872 2729.24 949 925 226.1

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