ASTROSAT CZTI

Data Quality Report

Orbit 22111

Creation date: 2024-06-27T18:36:43.505989
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/AS1A07_007T04_9000003276_22111cztM0_level2.evt modeM0/AS1A07_007T04_9000003276_22111cztM0_level2_quad_clean.evt
Size (bytes)1,338,684,480241,499,520
Size1.2 GB 230.3 MB
Events in quadrant A8,971,2201,547,506
Events in quadrant B8,846,8591,568,629
Events in quadrant C8,649,6631,519,739
Events in quadrant D12,830,2501,409,751

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0389864
B0385074
C0379034
D0509254

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184141820.988378%
B184141370.743999%
C184151630.885148%
D1841512806.950855%

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 20419 18417 128 128 0.63% 0.70%
B 20419 18417 35 35 0.17% 0.19%
C 20420 18418 2 2 0.01% 0.01%
D 20420 18418 928 928 4.54% 5.04%

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 5 16 516237 1174.58 2177 2129 437.7
A 15 174 45694 99.53 2177 2129 437.7
A 13 254 33300 71.22 2177 2129 437.7
B 3 64 220601 527.13 2174 2116 414.5
B 12 111 51210 118.45 2174 2116 414.5
B 11 111 44687 102.71 2174 2116 414.5
C 14 238 330761 667.84 2104 2113 492.1
C 10 22 112843 225.01 2104 2113 492.1
C 13 61 14781 25.74 2104 2113 492.1
D 1 52 2521012 5036.77 2057 2000 500.1
D 11 176 1396735 2788.78 2057 2000 500.1
D 7 38 226835 449.56 2057 2000 500.1

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