ASTROSAT CZTI

Data Quality Report

Orbit 18887

Creation date: 2024-06-27T17:56:07.159749
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/AS1A06_003T07_9000002818_18887cztM0_level2.evt modeM0/AS1A06_003T07_9000002818_18887cztM0_level2_quad_clean.evt
Size (bytes)474,068,16096,831,360
Size452.1 MB 92.3 MB
Events in quadrant A3,354,609641,639
Events in quadrant B3,274,789651,954
Events in quadrant C3,092,128615,041
Events in quadrant D4,213,320589,505

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137942
B0136172
C0131122
D0165752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6219500.803988%
B6219641.029104%
C6219400.643190%
D62182654.261821%

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 7484 6220 33 33 0.44% 0.53%
B 7484 6220 12 12 0.16% 0.19%
C 7484 6220 0 0 0.00% 0.00%
D 7483 6219 201 201 2.69% 3.23%

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 6 16 314963 2003.14 785 771 156.8
A 13 254 8960 52.21 785 771 156.8
A 14 111 8244 47.64 785 771 156.8
B 7 220 67106 451.19 786 766 147.0
B 0 189 64987 436.78 786 766 147.0
B 4 80 24335 160.3 786 766 147.0
C 14 238 119031 675.41 750 754 175.1
C 3 233 48099 270.36 750 754 175.1
C 13 61 5389 26.47 750 754 175.1
D 12 110 864045 4751.94 747 724 181.7
D 9 1 273326 1500.47 747 724 181.7
D 7 238 104279 569.99 747 724 181.7

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