ASTROSAT CZTI

Data Quality Report

Orbit 49689

Creation date: 2024-12-09T22:26:01.820713
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_233T01_9000006438_49689cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49689cztM0_level2_quad_clean.evt
Size (bytes)2,571,868,80081,656,640
Size2.4 GB 77.9 MB
Events in quadrant A35,684,90171,272
Events in quadrant B9,515,8381,379,606
Events in quadrant C13,408,59512,883
Events in quadrant D35,472,9338,400

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02951
B02951
C02951
D02973

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116408588
B038296150
C050468210
D0115836617

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144721392696.227197%
B144786064.185661%
C144781437599.288576%
D144701439699.488597%

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 19949 14472 13457 13457 67.46% 92.99%
B 19951 14485 371 371 1.86% 2.56%
C 19950 14477 1503 1503 7.53% 10.38%
D 19951 14470 13152 13152 65.92% 90.89%

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 11144003 59077.12 578 554 188.6
A 0 99 7947257 42129.54 578 554 188.6
A 12 50 2832245 15012.24 578 554 188.6
B 4 206 779854 2449.59 1502 1455 317.8
B 10 44 325390 1019.41 1502 1455 317.8
B 5 185 253564 793.38 1502 1455 317.8
C 15 180 3330674 61891.01 92 86 53.8
C 15 190 2622726 48735.49 92 86 53.8
C 15 181 1547424 28753.58 92 86 53.8
D 15 40 7049070 31260.08 372 336 225.5
D 7 45 4078720 18087.02 372 336 225.5
D 15 184 3163613 14028.66 372 336 225.5

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