ASTROSAT CZTI

Data Quality Report

Orbit 13087

Creation date: 2024-06-27T16:36:07.366118
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/AS1A04_067T01_9000001926_13087cztM0_level2.evt modeM0/AS1A04_067T01_9000001926_13087cztM0_level2_quad_clean.evt
Size (bytes)471,758,40077,523,840
Size449.9 MB 73.9 MB
Events in quadrant A3,162,819482,432
Events in quadrant B3,869,439469,541
Events in quadrant C3,347,880482,061
Events in quadrant D3,464,533459,182

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134663
B0157452
C0143922
D0148082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6512701.074939%
B65123795.820025%
C6512901.382064%
D65121652.533784%

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 7383 6515 5 5 0.07% 0.08%
B 7383 6515 160 160 2.17% 2.46%
C 7383 6515 56 56 0.76% 0.86%
D 7383 6515 80 80 1.08% 1.23%

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 83758 536.93 764 747 154.6
A 8 192 58113 371.05 764 747 154.6
A 5 16 31960 201.89 764 747 154.6
B 4 239 590307 4219.41 738 721 139.7
B 0 219 148330 1056.37 738 721 139.7
B 3 64 119644 851.08 738 721 139.7
C 15 208 449080 2648.43 733 736 169.3
C 14 234 31523 181.86 733 736 169.3
C 13 61 5394 27.52 733 736 169.3
D 1 52 555553 3171.12 728 709 175.0
D 8 195 96762 548.98 728 709 175.0
D 2 234 29396 163.96 728 709 175.0

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