ASTROSAT CZTI

Data Quality Report

Orbit 21833

Creation date: 2024-06-27T18:32:49.335391
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/AS1A07_004T01_9000003230_21833cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21833cztM0_level2_quad_clean.evt
Size (bytes)612,316,80098,786,880
Size584.0 MB 94.2 MB
Events in quadrant A4,181,367602,552
Events in quadrant B4,491,706615,161
Events in quadrant C4,294,660597,041
Events in quadrant D4,985,689572,548

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181343
B0187813
C0182093
D0205223

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87022743.148701%
B87033393.895209%
C87033333.826267%
D87033423.929679%

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 9177 8703 1 1 0.01% 0.01%
B 9178 8706 21 21 0.23% 0.24%
C 9178 8705 0 0 0.00% 0.00%
D 9178 8706 87 87 0.95% 1.00%

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 14 235 20136 87.05 1078 1052 219.2
A 13 254 15787 67.21 1078 1052 219.2
A 3 137 9452 38.32 1078 1052 219.2
B 3 64 149862 718.43 1079 1052 207.1
B 0 230 31531 147.15 1079 1052 207.1
B 12 111 25462 117.85 1079 1052 207.1
C 14 238 159612 643.06 1041 1043 246.6
C 3 248 35164 138.37 1041 1043 246.6
C 10 91 22487 86.96 1041 1043 246.6
D 1 52 825931 3205.4 1049 1014 257.4
D 2 136 53438 203.71 1049 1014 257.4
D 7 38 43261 164.16 1049 1014 257.4

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