ASTROSAT CZTI

Data Quality Report

Orbit 39575

Creation date: 2024-06-27T22:06:19.777399
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_018T01_9000005488_39575cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39575cztM0_level2_quad_clean.evt
Size (bytes)1,189,120,320233,282,880
Size1.1 GB 222.5 MB
Events in quadrant A9,819,8231,616,564
Events in quadrant B6,388,6081,681,867
Events in quadrant C17,131,4561,339,792
Events in quadrant D9,578,1951,442,164

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385064
B0291533
C0607333
D0385103

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A142333082.163985%
B14233360.252933%
C14233246217.297829%
D142335143.611326%

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 19550 14236 258 258 1.32% 1.81%
B 19550 14236 14 14 0.07% 0.10%
C 19550 14236 2301 2301 11.77% 16.16%
D 19550 14236 510 510 2.61% 3.58%

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 15 222 2335971 7444.69 1555 1523 313.6
A 10 83 1007321 3207.55 1555 1523 313.6
A 9 143 215498 682.38 1555 1523 313.6
B 5 172 186406 631.94 1554 1513 292.6
B 5 255 43528 143.6 1554 1513 292.6
B 12 111 36804 120.62 1554 1513 292.6
C 9 187 6741779 20324.31 1439 1448 331.6
C 3 233 2705478 8153.54 1439 1448 331.6
C 15 208 1506360 4537.8 1439 1448 331.6
D 12 227 2303323 6202.88 1523 1482 371.1
D 1 52 415386 1115.37 1523 1482 371.1
D 13 249 311153 834.48 1523 1482 371.1

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