ASTROSAT CZTI

Data Quality Report

Orbit 38815

Creation date: 2024-06-27T21:56:49.200911
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/AS1A12_061T07_9000005402_38815cztM0_level2.fits modeM0/AS1A12_061T07_9000005402_38815cztM0_level2_quad_clean.evt
Size (bytes)405,383,040109,206,720
Size386.6 MB 104.1 MB
Events in quadrant A3,686,406727,475
Events in quadrant B2,994,923750,735
Events in quadrant C3,481,994708,132
Events in quadrant D4,330,146660,391

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150203
B0132982
C0144462
D0173432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6590580.880121%
B659070.106222%
C65901221.851290%
D65901051.593323%

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 9274 6592 32 32 0.35% 0.49%
B 9274 6592 0 0 0.00% 0.00%
C 9274 6592 122 122 1.32% 1.85%
D 9274 6592 108 108 1.16% 1.64%

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 444123 2995.33 726 710 148.0
A 13 248 273202 1840.73 726 710 148.0
A 12 16 94837 635.84 726 710 148.0
B 0 230 70168 490.46 726 703 141.6
B 5 200 34148 236.14 726 703 141.6
B 12 111 18478 125.5 726 703 141.6
C 10 20 380095 2292.79 710 714 165.5
C 15 214 292656 1764.35 710 714 165.5
C 1 23 37291 221.05 710 714 165.5
D 2 16 708805 4055.29 707 684 174.6
D 12 227 500893 2864.62 707 684 174.6
D 10 118 144402 823.05 707 684 174.6

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