ASTROSAT CZTI

Data Quality Report

Orbit 41913

Creation date: 2024-06-27T22:34:19.452903
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_099T01_9000005716_41913cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_41913cztM0_level2_quad_clean.evt
Size (bytes)624,905,28079,686,720
Size596.0 MB 76.0 MB
Events in quadrant A3,244,115625,727
Events in quadrant B2,690,417643,306
Events in quadrant C3,322,411592,925
Events in quadrant D13,431,578151,631

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131062
B0116432
C0134682
D0434552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5702460.806734%
B5702120.210452%
C57032694.716816%
D5703438576.889356%

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 9135 5704 32 32 0.35% 0.56%
B 9135 5704 4 4 0.04% 0.07%
C 9136 5705 264 264 2.89% 4.63%
D 9136 5705 4175 4175 45.70% 73.18%

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 559787 4363.66 620 606 128.1
A 14 24 270061 2102.74 620 606 128.1
A 3 1 12494 92.77 620 606 128.1
B 7 202 163295 1361.4 616 598 119.5
B 0 190 38471 316.91 616 598 119.5
B 0 245 22420 182.6 616 598 119.5
C 0 10 779675 5615.09 586 588 138.7
C 15 214 223875 1609.29 586 588 138.7
C 0 15 34372 243.49 586 588 138.7
D 12 79 12134855 168469.0 288 280 72.0
D 13 249 78754 1089.48 288 280 72.0
D 12 6 49364 681.45 288 280 72.0

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