ASTROSAT CZTI

Data Quality Report

Orbit 31609

Creation date: 2024-06-27T20:30:37.103236
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/AS1C06_002T03_9000004610_31609cztM0_level2.evt modeM0/AS1C06_002T03_9000004610_31609cztM0_level2_quad_clean.evt
Size (bytes)1,271,992,320183,614,400
Size1.2 GB 175.1 MB
Events in quadrant A12,422,5071,085,774
Events in quadrant B8,576,2031,303,294
Events in quadrant C5,410,8391,277,273
Events in quadrant D11,403,2361,162,143

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440161
B0333821
C0227751
D0413151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10554347632.935380%
B105544314.083760%
C105552322.198010%
D10555145413.775462%

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 10704 10554 2726 2726 25.47% 25.83%
B 10704 10554 164 164 1.53% 1.55%
C 10705 10555 19 19 0.18% 0.18%
D 10705 10555 1333 1333 12.45% 12.63%

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 13 8399728 39933.86 1040 1016 210.3
A 13 254 17942 80.48 1040 1016 210.3
A 3 137 10387 44.56 1040 1016 210.3
B 6 159 2942697 12929.51 1206 1174 227.5
B 5 172 542800 2380.73 1206 1174 227.5
B 4 80 173590 757.86 1206 1174 227.5
C 3 233 438731 1583.03 1179 1184 276.4
C 14 238 200569 721.37 1179 1184 276.4
C 14 225 59954 212.63 1179 1184 276.4
D 8 195 4081192 14973.9 1130 1096 272.5
D 12 2 1844826 6766.47 1130 1096 272.5
D 12 218 632854 2318.54 1130 1096 272.5

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