ASTROSAT CZTI

Data Quality Report

Orbit 31578

Creation date: 2024-06-27T20:30:09.928266
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_082T10_9000004602_31578cztM0_level2.evt modeM0/AS1A10_082T10_9000004602_31578cztM0_level2_quad_clean.evt
Size (bytes)1,311,226,560154,212,480
Size1.2 GB 147.1 MB
Events in quadrant A5,973,061993,898
Events in quadrant B10,955,629972,721
Events in quadrant C13,798,008875,518
Events in quadrant D8,115,711935,613

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261793
B0420733
C0500963
D0325335

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128991160.899295%
B128995594.333669%
C12899188414.605783%
D128992992.318009%

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 14204 12899 0 0 0.00% 0.00%
B 14204 12899 280 280 1.97% 2.17%
C 14204 12899 1028 1028 7.24% 7.97%
D 14204 12899 228 228 1.61% 1.77%

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 13 254 24020 72.94 1547 1513 308.6
A 3 137 16170 47.5 1547 1513 308.6
A 0 226 12777 36.5 1547 1513 308.6
B 6 159 3464206 12001.21 1516 1480 288.5
B 4 80 1262420 4370.2 1516 1480 288.5
B 12 1 88043 300.01 1516 1480 288.5
C 3 233 7901889 24112.33 1403 1406 327.7
C 14 238 224643 681.32 1403 1406 327.7
C 4 175 74253 222.33 1403 1406 327.7
D 8 195 1380626 3930.13 1482 1442 350.9
D 12 233 705550 2006.43 1482 1442 350.9
D 13 249 126898 357.5 1482 1442 350.9

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