ASTROSAT CZTI

Data Quality Report

Orbit 55237

Creation date: 2025-12-14T13:13:19.426367
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/AS1A14_009T01_9000006534_55237cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55237cztM0_level2_quad_clean.evt
Size (bytes)1,243,244,160266,506,560
Size1.2 GB 254.2 MB
Events in quadrant A10,682,7621,692,324
Events in quadrant B9,567,1951,854,941
Events in quadrant C12,407,6771,640,379
Events in quadrant D11,867,9771,551,637

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0462333
B0429703
C0504123
D0492093

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193058774.542865%
B193056263.242683%
C193059574.957265%
D193057964.123284%

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 20529 19304 522 522 2.54% 2.70%
B 20529 19304 185 185 0.90% 0.96%
C 20530 19306 701 701 3.41% 3.63%
D 20529 19304 508 508 2.47% 2.63%

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 12 115 1467723 2969.61 2007 1955 493.6
A 0 8 489664 988.09 2007 1955 493.6
A 4 205 266734 536.44 2007 1955 493.6
B 5 185 567003 1317.59 2003 1924 428.9
B 2 249 349948 811.48 2003 1924 428.9
B 10 245 177529 409.46 2003 1924 428.9
C 13 3 1846940 3446.78 1962 1946 535.3
C 12 252 755253 1407.31 1962 1946 535.3
C 9 38 635965 1184.46 1962 1946 535.3
D 8 160 1341177 2398.93 1974 1880 558.3
D 2 249 1021280 1825.94 1974 1880 558.3
D 11 129 918558 1641.94 1974 1880 558.3

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