ASTROSAT CZTI

Data Quality Report

Orbit 00237

Creation date: 2024-06-27T13:58:17.556797
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/AS1P01_123T01_9000000024_00237cztM0_level2.evt modeM0/AS1P01_123T01_9000000024_00237cztM0_level2_quad_clean.evt
Size (bytes)885,150,72078,632,640
Size844.1 MB 75.0 MB
Events in quadrant A6,430,551498,554
Events in quadrant B6,571,332504,585
Events in quadrant C5,745,880510,764
Events in quadrant D7,689,133477,897

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230702
B0234731
C0210671
D0268161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A556030.053957%
B5560140.251799%
C556020.035971%
D55603305.935252%

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 7264 5561 95 95 1.31% 1.71%
B 7264 5561 129 129 1.78% 2.32%
C 7264 5561 33 33 0.45% 0.59%
D 7264 5561 852 852 11.73% 15.32%

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 12 150 25132 64.46 1645 1629 364.6
A 5 244 21216 53.72 1645 1629 364.6
A 12 189 12070 28.63 1645 1629 364.6
B 7 220 163432 420.31 1634 1639 384.9
B 5 46 51565 129.7 1634 1639 384.9
B 15 219 31840 78.46 1634 1639 384.9
C 1 1 11267 23.96 1454 1504 407.5
C 10 69 8779 17.85 1454 1504 407.5
C 0 186 6735 12.84 1454 1504 407.5
D 1 4 1945764 4627.44 1393 1436 420.2
D 10 154 87579 205.02 1393 1436 420.2
D 1 5 71012 165.59 1393 1436 420.2

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