ASTROSAT CZTI

Data Quality Report

Orbit 19399

Creation date: 2024-06-27T18:02:27.913270
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_105T01_9000002876_19399cztM0_level2.evt modeM0/AS1T03_105T01_9000002876_19399cztM0_level2_quad_clean.evt
Size (bytes)529,606,08054,132,480
Size505.1 MB 51.6 MB
Events in quadrant A2,198,586367,577
Events in quadrant B2,075,195372,963
Events in quadrant C2,209,399359,461
Events in quadrant D9,266,562238,558

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092771
B088511
C093341
D0304111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4248811.906780%
B4248521.224105%
C42481152.707156%
D4248348882.109228%

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 4888 4248 25 25 0.51% 0.59%
B 4888 4249 0 0 0.00% 0.00%
C 4888 4248 23 23 0.47% 0.54%
D 4887 4247 3141 3141 64.27% 73.96%

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 4 2 175015 1642.1 522 510 106.3
A 13 254 6692 58.17 522 510 106.3
A 0 226 4603 38.52 522 510 106.3
B 0 198 12343 116.84 521 509 101.3
B 12 111 11907 112.53 521 509 101.3
B 11 111 10301 96.68 521 509 101.3
C 0 207 112003 944.32 498 500 118.1
C 14 238 78623 661.62 498 500 118.1
C 3 233 44143 369.61 498 500 118.1
D 10 66 5509605 68741.7 324 314 80.1
D 7 238 2419024 30179.25 324 314 80.1
D 12 110 36076 446.22 324 314 80.1

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