ASTROSAT CZTI

Data Quality Report

Orbit 41401

Creation date: 2024-06-27T22:28:33.413628
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_035T01_9000005666_41401cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41401cztM0_level2_quad_clean.evt
Size (bytes)362,983,68091,460,160
Size346.2 MB 87.2 MB
Events in quadrant A3,137,954628,892
Events in quadrant B3,413,670628,164
Events in quadrant C3,193,780584,618
Events in quadrant D3,286,940564,167

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124613
B0134352
C0124032
D0131312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5192541.040062%
B51922725.238829%
C51922615.026965%
D5192701.348228%

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 9077 5194 31 31 0.34% 0.60%
B 9077 5194 205 205 2.26% 3.95%
C 9077 5194 256 256 2.82% 4.93%
D 9077 5194 59 59 0.65% 1.14%

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 485337 3901.16 605 592 124.3
A 13 248 287206 2306.63 605 592 124.3
A 12 189 12282 94.08 605 592 124.3
B 5 255 1025456 8999.59 594 579 113.9
B 0 190 28559 245.7 594 579 113.9
B 12 111 14362 121.03 594 579 113.9
C 0 10 724979 5387.93 577 579 134.4
C 15 214 213540 1583.96 577 579 134.4
C 13 61 3877 24.53 577 579 134.4
D 12 79 262698 1800.52 595 580 145.6
D 13 174 250318 1715.48 595 580 145.6
D 13 249 158425 1084.25 595 580 145.6

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