ASTROSAT CZTI

Data Quality Report

Orbit 14880

Creation date: 2024-06-27T17:00:50.826380
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_054T01_9000002200_14880cztM0_level2.evt modeM0/AS1T02_054T01_9000002200_14880cztM0_level2_quad_clean.evt
Size (bytes)447,160,320108,861,120
Size426.4 MB 103.8 MB
Events in quadrant A3,187,882725,024
Events in quadrant B3,454,663724,125
Events in quadrant C3,137,509718,347
Events in quadrant D3,347,409703,034

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130762
B0139451
C0129211
D0137191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6109811.325913%
B6109921.505975%
C6109320.523817%
D6109871.424128%

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 7425 6111 5 5 0.07% 0.08%
B 7425 6111 18 18 0.24% 0.29%
C 7425 6111 1 1 0.01% 0.02%
D 7425 6111 52 52 0.70% 0.85%

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 15 31 77625 490.62 788 774 156.6
A 12 189 32289 201.19 788 774 156.6
A 15 239 29001 180.2 788 774 156.6
B 10 16 112746 786.99 772 753 142.3
B 3 64 105169 733.75 772 753 142.3
B 0 189 82338 573.31 772 753 142.3
C 3 233 156241 910.37 755 761 170.8
C 0 207 32396 185.23 755 761 170.8
C 13 61 5399 27.16 755 761 170.8
D 7 254 227978 1246.19 766 748 182.3
D 13 172 89655 487.59 766 748 182.3
D 7 38 45900 247.62 766 748 182.3

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