ASTROSAT CZTI

Data Quality Report

Orbit 00396

Creation date: 2024-06-27T13:59:20.580734
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/AS1P01_161T02_9000000066_00396cztM0_level2.evt modeM0/AS1P01_161T02_9000000066_00396cztM0_level2_quad_clean.evt
Size (bytes)780,687,36051,693,120
Size744.5 MB 49.3 MB
Events in quadrant A6,184,429306,113
Events in quadrant B5,885,335290,931
Events in quadrant C5,822,291306,492
Events in quadrant D5,399,340291,801

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221553
B0212222
C0210692
D0198792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5275100.189573%
B527550.094787%
C5275120.227488%
D527590.170616%

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 7340 5276 154 154 2.10% 2.92%
B 7340 5276 59 59 0.80% 1.12%
C 7340 5276 81 81 1.10% 1.54%
D 7340 5276 67 67 0.91% 1.27%

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 0 238 105566 310.88 1496 1478 334.8
A 9 111 88603 260.22 1496 1478 334.8
A 13 17 58640 170.73 1496 1478 334.8
B 0 220 21987 57.95 1515 1521 353.2
B 0 182 15720 40.21 1515 1521 353.2
B 5 46 15609 39.89 1515 1521 353.2
C 1 1 269652 691.89 1390 1440 387.6
C 2 53 61384 154.63 1390 1440 387.6
C 5 234 29374 72.06 1390 1440 387.6
D 13 51 62675 147.8 1315 1366 414.8
D 13 155 62228 146.73 1315 1366 414.8
D 1 5 48717 114.15 1315 1366 414.8

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