ASTROSAT CZTI

Data Quality Report

Orbit 12792

Creation date: 2024-06-27T16:32:16.770796
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_110T04_9000001886_12792cztM0_level2.evt modeM0/AS1A04_110T04_9000001886_12792cztM0_level2_quad_clean.evt
Size (bytes)469,382,400117,786,240
Size447.6 MB 112.3 MB
Events in quadrant A3,038,473806,575
Events in quadrant B3,642,166800,821
Events in quadrant C2,759,513789,991
Events in quadrant D4,353,739736,882

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129342
B0147391
C0125301
D0168631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6203490.789940%
B62032584.159278%
C6203210.338546%
D62034046.512978%

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 7319 6205 2 2 0.03% 0.03%
B 7319 6205 130 130 1.78% 2.10%
C 7319 6205 0 0 0.00% 0.00%
D 7319 6205 311 311 4.25% 5.01%

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 152403 1009.82 742 727 150.2
A 9 143 14652 92.71 742 727 150.2
A 8 15 9118 55.86 742 727 150.2
B 4 239 662602 4842.43 725 709 136.7
B 0 214 30270 216.27 725 709 136.7
B 0 219 29237 208.71 725 709 136.7
C 13 61 5159 27.41 707 710 162.3
C 3 202 1758 6.45 707 710 162.3
C 8 222 1700 6.1 707 710 162.3
D 8 195 1064315 6490.73 692 675 163.9
D 1 52 535065 3261.05 692 675 163.9
D 10 253 35473 212.35 692 675 163.9

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