ASTROSAT CZTI

Data Quality Report

Orbit 17499

Creation date: 2024-06-27T17:37:11.672780
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/AS1A05_194T05_9000002592_17499cztM0_level2.evt modeM0/AS1A05_194T05_9000002592_17499cztM0_level2_quad_clean.evt
Size (bytes)470,401,92096,560,640
Size448.6 MB 92.1 MB
Events in quadrant A3,240,616630,325
Events in quadrant B3,269,973642,417
Events in quadrant C3,325,878620,146
Events in quadrant D3,989,359599,250

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130902
B0131422
C0133153
D0156422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6183240.388161%
B6183290.469028%
C6182380.614688%
D61821672.701391%

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 7543 6184 1 1 0.01% 0.02%
B 7543 6184 0 0 0.00% 0.00%
C 7542 6183 0 0 0.00% 0.00%
D 7542 6183 142 142 1.88% 2.30%

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 15 174 29474 171.64 835 822 166.9
A 0 226 7340 39.05 835 822 166.9
A 12 194 6237 32.44 835 822 166.9
B 0 230 29311 185.66 824 805 153.5
B 0 189 18621 116.04 824 805 153.5
B 12 111 17854 111.04 824 805 153.5
C 14 238 125222 670.74 801 809 185.5
C 5 218 58730 312.27 801 809 185.5
C 3 233 14666 74.71 801 809 185.5
D 11 176 433453 2238.07 806 786 193.3
D 13 189 267000 1377.05 806 786 193.3
D 10 70 75236 385.11 806 786 193.3

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