ASTROSAT CZTI

Data Quality Report

Orbit 19864

Creation date: 2024-06-27T18:08:03.598545
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/AS1T03_118T01_9000002962_19864cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19864cztM0_level2_quad_clean.evt
Size (bytes)983,704,320179,838,720
Size938.1 MB 171.5 MB
Events in quadrant A7,168,2641,147,064
Events in quadrant B6,519,4251,166,434
Events in quadrant C7,767,8661,109,362
Events in quadrant D7,421,3241,089,741

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300922
B0280212
C0317252
D0311292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135123792.804914%
B135122752.035228%
C135124453.293369%
D135134233.130319%

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 14027 13513 112 112 0.80% 0.83%
B 14027 13514 6 6 0.04% 0.04%
C 14027 13513 55 55 0.39% 0.41%
D 14028 13514 167 167 1.19% 1.24%

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 14 238 900041 2700.53 1631 1595 332.7
A 0 226 13955 37.15 1631 1595 332.7
A 3 137 13579 36.02 1631 1595 332.7
B 4 216 44680 137.85 1625 1582 312.6
B 12 111 38524 118.16 1625 1582 312.6
B 11 111 35093 107.19 1625 1582 312.6
C 9 221 1404315 3821.6 1569 1581 367.1
C 14 238 242347 655.94 1569 1581 367.1
C 13 61 10726 24.91 1569 1581 367.1
D 1 52 1253470 3214.48 1592 1548 389.5
D 7 207 72083 181.11 1592 1548 389.5
D 12 218 55889 139.53 1592 1548 389.5

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