ASTROSAT CZTI

Data Quality Report

Orbit 41289

Creation date: 2024-06-27T22:27:03.939088
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_011T42_9000005640_41289cztM0_level2.fits modeM0/AS1A12_011T42_9000005640_41289cztM0_level2_quad_clean.evt
Size (bytes)323,009,28089,763,840
Size308.0 MB 85.6 MB
Events in quadrant A2,891,691609,967
Events in quadrant B2,449,705628,606
Events in quadrant C2,982,233570,317
Events in quadrant D3,212,227531,370

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116403
B0109562
C0121422
D0131992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5399150.277829%
B539990.166698%
C53991763.259863%
D53991322.444897%

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 7312 5400 4 4 0.05% 0.07%
B 7312 5400 3 3 0.04% 0.06%
C 7312 5400 165 165 2.26% 3.06%
D 7312 5400 138 138 1.89% 2.56%

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 508901 4011.7 613 601 126.7
A 12 189 8124 59.37 613 601 126.7
A 13 254 7115 51.41 613 601 126.7
B 5 255 45941 383.21 605 588 118.3
B 12 111 15299 124.3 605 588 118.3
B 11 111 13942 112.84 605 588 118.3
C 0 10 461470 3389.48 582 585 136.0
C 15 214 230893 1693.75 582 585 136.0
C 15 159 11191 78.0 582 585 136.0
D 7 223 283033 1952.34 587 569 144.7
D 1 52 178290 1228.38 587 569 144.7
D 2 249 148523 1022.63 587 569 144.7

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