ASTROSAT CZTI

Data Quality Report

Orbit 15684

Creation date: 2024-06-27T17:12:04.231932
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/AS1T02_084T01_9000002318_15684cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15684cztM0_level2_quad_clean.evt
Size (bytes)1,222,960,320230,016,960
Size1.1 GB 219.4 MB
Events in quadrant A8,331,9651,456,106
Events in quadrant B8,710,4831,470,709
Events in quadrant C8,750,8741,430,347
Events in quadrant D10,037,9691,379,990

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370464
B0375123
C0379653
D0424333

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178461560.874145%
B17846880.493108%
C178461740.975008%
D178465262.947439%

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 19853 17850 66 66 0.33% 0.37%
B 19853 17850 4 4 0.02% 0.02%
C 19853 17850 32 32 0.16% 0.18%
D 19853 17850 428 428 2.16% 2.40%

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 13 248 268093 628.41 2088 2043 423.4
A 0 226 18702 39.35 2088 2043 423.4
A 13 210 18345 38.51 2088 2043 423.4
B 0 214 122632 305.14 2092 2040 395.2
B 0 189 92926 229.97 2092 2040 395.2
B 4 216 86046 212.56 2092 2040 395.2
C 3 233 445191 950.38 1998 2008 466.3
C 14 238 306897 653.81 1998 2008 466.3
C 9 54 167889 355.72 1998 2008 466.3
D 1 52 2122417 4332.85 2007 1949 489.4
D 2 120 77563 154.51 2007 1949 489.4
D 2 234 75667 150.63 2007 1949 489.4

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