ASTROSAT CZTI

Data Quality Report

Orbit 15632

Creation date: 2024-06-27T17:11:22.687253
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_086T01_9000002316_15632cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15632cztM0_level2_quad_clean.evt
Size (bytes)549,178,56071,576,640
Size523.7 MB 68.3 MB
Events in quadrant A3,246,559438,901
Events in quadrant B3,380,534444,101
Events in quadrant C3,636,489438,651
Events in quadrant D5,947,435411,813

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132423
B0137852
C0148732
D0220412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6214881.416157%
B62141041.673640%
C62141502.413904%
D62145799.317670%

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 7550 6215 0 0 0.00% 0.00%
B 7550 6215 0 0 0.00% 0.00%
C 7550 6215 0 0 0.00% 0.00%
D 7550 6215 492 492 6.52% 7.92%

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 0 226 7493 39.97 843 828 166.8
A 12 194 6362 33.18 843 828 166.8
A 3 137 5224 26.36 843 828 166.8
B 0 189 44878 286.03 841 823 154.0
B 4 251 26042 163.74 841 823 154.0
B 0 214 21902 136.86 841 823 154.0
C 3 233 302662 1626.92 820 828 185.5
C 14 238 129511 693.62 820 828 185.5
C 13 61 5807 26.84 820 828 185.5
D 1 52 2263194 11793.76 805 785 191.8
D 12 110 535528 2787.57 805 785 191.8
D 10 70 44758 229.23 805 785 191.8

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