ASTROSAT CZTI

Data Quality Report

Orbit 20170402_A03_036T01_9000001128_level2

Creation date: 2025-11-10T10:52:46.780268
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/AS1A03_036T01_9000001128cztM0_level2.fits modeM0/AS1A03_036T01_9000001128cztM0_level2_quad_clean.evt
Size (bytes)504,918,720521,697,600
Size481.5 MB 497.5 MB
Events in quadrant A3,024,1163,180,148
Events in quadrant B2,906,8383,131,559
Events in quadrant C2,998,6163,013,250
Events in quadrant D2,550,5662,664,681

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011340
B011340
C011340
D011340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01134620
B01203930
C01130530
D01357230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A555364510.812086%
B5553511482.067165%
C555363650.657231%
D5553620373.667891%

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 62546 55533 0 0 0.00% 0.00%
B 62546 55431 0 0 0.00% 0.00%
C 62546 55533 0 0 0.00% 0.00%
D 62546 55520 0 0 0.00% 0.00%

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 29 2971 11.14 786 732 201.0
A 7 110 2489 8.74 786 732 201.0
A 0 30 2326 7.93 786 732 201.0
B 2 9 2535 11.66 766 726 155.2
B 14 254 2017 8.32 766 726 155.2
B 3 17 1960 7.95 766 726 155.2
C 12 241 2157 6.76 790 729 211.1
C 1 80 2129 6.63 790 729 211.1
C 1 81 2106 6.52 790 729 211.1
D 6 231 1856 6.17 727 659 194.0
D 3 14 1829 6.03 727 659 194.0
D 10 189 1798 5.87 727 659 194.0

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