ASTROSAT CZTI

Data Quality Report

Orbit 38362

Creation date: 2024-06-27T21:51:41.092340
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/AS1A10_094T24_9000005374_38362cztM0_level2.fits modeM0/AS1A10_094T24_9000005374_38362cztM0_level2_quad_clean.evt
Size (bytes)450,875,52086,477,760
Size430.0 MB 82.5 MB
Events in quadrant A2,997,087611,865
Events in quadrant B2,658,108624,023
Events in quadrant C2,396,066589,688
Events in quadrant D8,255,575446,474

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121283
B0111582
C0101372
D0279642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4937380.769698%
B4937561.134292%
C4937150.303828%
D4937115523.394774%

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 7060 4938 19 19 0.27% 0.38%
B 7060 4938 29 29 0.41% 0.59%
C 7060 4938 8 8 0.11% 0.16%
D 7060 4938 1764 1764 24.99% 35.72%

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 396847 3499.34 560 551 113.2
A 12 16 203066 1788.23 560 551 113.2
A 9 143 112136 985.31 560 551 113.2
B 5 172 117342 1108.66 560 546 105.3
B 15 35 103561 977.85 560 546 105.3
B 0 183 85010 801.76 560 546 105.3
C 15 214 209579 1661.31 543 546 125.8
C 0 10 47819 375.71 543 546 125.8
C 14 254 6265 45.45 543 546 125.8
D 10 203 5854972 46337.82 516 501 126.3
D 12 227 99251 781.6 516 501 126.3
D 12 235 76868 604.44 516 501 126.3

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