ASTROSAT CZTI

Data Quality Report

Orbit 16575

Creation date: 2024-06-27T17:24:36.007901
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/AS1T03_020T01_9000002444_16575cztM0_level2.evt modeM0/AS1T03_020T01_9000002444_16575cztM0_level2_quad_clean.evt
Size (bytes)513,360,00099,728,640
Size489.6 MB 95.1 MB
Events in quadrant A3,674,779670,170
Events in quadrant B3,623,293694,671
Events in quadrant C3,659,073658,477
Events in quadrant D4,129,308523,885

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153043
B0152172
C0153662
D0171272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6779560.826081%
B6779751.106358%
C6779721.062104%
D6779118417.465703%

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 7845 6781 44 44 0.56% 0.65%
B 7845 6781 14 14 0.18% 0.21%
C 7845 6781 0 0 0.00% 0.00%
D 7845 6779 233 233 2.97% 3.44%

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 9 143 412412 2587.74 790 771 159.1
A 15 174 206992 1296.39 790 771 159.1
A 2 79 13722 81.42 790 771 159.1
B 0 85 154619 1020.6 804 785 150.7
B 15 35 147228 971.57 804 785 150.7
B 0 229 32214 208.51 804 785 150.7
C 3 233 522720 2914.34 772 774 179.1
C 14 238 120627 669.21 772 774 179.1
C 7 247 6811 33.71 772 774 179.1
D 1 52 1090462 6746.44 666 647 161.5
D 10 70 244140 1507.33 666 647 161.5
D 2 33 118580 730.06 666 647 161.5

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