ASTROSAT CZTI

Data Quality Report

Orbit 42980

Creation date: 2024-06-27T22:46:30.615292
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/AS1T05_148T01_9000005838_42980cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_42980cztM0_level2_quad_clean.evt
Size (bytes)475,565,760109,601,280
Size453.5 MB 104.5 MB
Events in quadrant A3,403,228859,899
Events in quadrant B6,657,758580,721
Events in quadrant C2,800,658832,022
Events in quadrant D4,346,172690,231

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137701
B0232631
C0113451
D0163321

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5091911.787468%
B5092174434.249804%
C509250.098193%
D50924949.701493%

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 7065 5092 59 59 0.84% 1.16%
B 7066 5093 1440 1440 20.38% 28.27%
C 7066 5093 2 2 0.03% 0.04%
D 7066 5093 431 431 6.10% 8.46%

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 518448 3289.14 678 664 157.4
A 15 237 220229 1394.75 678 664 157.4
A 7 3 15622 95.02 678 664 157.4
B 4 81 3028260 25912.59 532 519 116.8
B 4 171 1417682 12128.63 532 519 116.8
B 5 255 36970 311.96 532 519 116.8
C 15 214 205059 1186.68 654 658 172.2
C 14 254 36810 209.89 654 658 172.2
C 7 220 10376 56.42 654 658 172.2
D 13 249 1458569 8521.88 625 602 171.1
D 1 52 216079 1259.47 625 602 171.1
D 1 47 108560 631.02 625 602 171.1

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