ASTROSAT CZTI

Data Quality Report

Orbit 42458

Creation date: 2024-06-27T22:40:25.047346
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/AS1C07_001T10_9000005806_42458cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42458cztM0_level2_quad_clean.evt
Size (bytes)325,546,56088,001,280
Size310.5 MB 83.9 MB
Events in quadrant A2,888,305599,598
Events in quadrant B2,589,111603,682
Events in quadrant C2,477,985578,594
Events in quadrant D3,688,991517,808

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116122
B0113352
C0107192
D0145502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5212160.306984%
B5212470.901765%
C521230.057559%
D52123085.909440%

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 7124 5213 5 5 0.07% 0.10%
B 7124 5213 27 27 0.38% 0.52%
C 7124 5213 0 0 0.00% 0.00%
D 7124 5213 237 237 3.33% 4.55%

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 10 83 564272 4789.3 575 564 117.7
A 13 248 63441 534.2 575 564 117.7
A 12 189 19488 160.78 575 564 117.7
B 0 186 267966 2472.1 566 553 108.2
B 3 112 18662 167.41 566 553 108.2
B 5 255 16203 144.68 566 553 108.2
C 15 214 222194 1723.41 551 553 128.6
C 3 233 59210 456.1 551 553 128.6
C 14 254 37770 289.39 551 553 128.6
D 1 52 309166 2327.01 545 530 132.6
D 1 47 299009 2250.43 545 530 132.6
D 2 16 229817 1728.75 545 530 132.6

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