ASTROSAT CZTI

Data Quality Report

Orbit 45576

Creation date: 2024-06-27T23:13:49.791888
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/AS1A13_071T04_9000006110_45576cztM0_level2.fits modeM0/AS1A13_071T04_9000006110_45576cztM0_level2_quad_clean.evt
Size (bytes)559,008,000113,224,320
Size533.1 MB 108.0 MB
Events in quadrant A6,051,481784,346
Events in quadrant B3,620,795802,754
Events in quadrant C4,206,218726,277
Events in quadrant D6,306,548658,492

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221692
B0150092
C0170402
D0233734

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65502764.213740%
B65502293.496183%
C65504597.007634%
D654973711.253627%

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 7735 6551 23 23 0.30% 0.35%
B 7735 6551 76 76 0.98% 1.16%
C 7735 6551 339 339 4.38% 5.17%
D 7734 6550 561 561 7.25% 8.56%

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 2940132 18389.15 781 765 159.8
A 10 248 23415 141.7 781 765 159.8
A 7 192 23056 139.46 781 765 159.8
B 15 201 165534 1100.29 773 751 149.8
B 0 189 129055 856.71 773 751 149.8
B 5 172 123988 822.88 773 751 149.8
C 12 2 1049240 6094.58 741 745 172.0
C 14 254 245174 1420.79 741 745 172.0
C 2 14 15140 83.67 741 745 172.0
D 1 52 2028374 11207.7 725 702 180.9
D 11 241 627295 3463.41 725 702 180.9
D 11 224 327781 1807.89 725 702 180.9

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