ASTROSAT CZTI

Data Quality Report

Orbit 33335

Creation date: 2024-06-27T20:47:59.937571
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/AS1A10_090T11_9000004784_33335cztM0_level2.evt modeM0/AS1A10_090T11_9000004784_33335cztM0_level2_quad_clean.evt
Size (bytes)562,613,76072,092,160
Size536.6 MB 68.8 MB
Events in quadrant A2,793,300474,205
Events in quadrant B4,459,594443,554
Events in quadrant C4,202,386464,908
Events in quadrant D5,239,547443,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113433
B0166722
C0161262
D0193262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5089200.393005%
B508970413.833759%
C50892474.853606%
D50892144.205148%

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 7063 5090 9 9 0.13% 0.18%
B 7063 5090 444 444 6.29% 8.72%
C 7063 5090 205 205 2.90% 4.03%
D 7063 5090 181 181 2.56% 3.56%

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 0 254 65126 466.71 696 686 138.1
A 12 16 20826 145.86 696 686 138.1
A 12 194 8465 56.34 696 686 138.1
B 0 219 911181 7383.41 660 648 123.3
B 5 172 839860 6805.08 660 648 123.3
B 4 170 52130 417.46 660 648 123.3
C 1 23 538009 3631.78 654 664 148.0
C 10 49 458997 3097.76 654 664 148.0
C 15 214 238713 1608.91 654 664 148.0
D 8 195 1566316 9649.59 664 645 162.3
D 1 52 340090 2092.08 664 645 162.3
D 12 218 249438 1533.37 664 645 162.3

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