ASTROSAT CZTI

Data Quality Report

Orbit 20173

Creation date: 2024-06-27T18:12:03.255918
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/AS1C04_001T01_9000002994_20173cztM0_level2.evt modeM0/AS1C04_001T01_9000002994_20173cztM0_level2_quad_clean.evt
Size (bytes)1,416,608,640275,463,360
Size1.3 GB 262.7 MB
Events in quadrant A15,857,0231,646,979
Events in quadrant B7,767,4801,943,470
Events in quadrant C7,728,7241,891,089
Events in quadrant D10,522,4661,810,920

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03080
B03080
C03080
D03080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0574894
B0333113
C0331803
D0420113

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15218383725.213563%
B152191480.972469%
C152191931.268152%
D152198375.499704%

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 17988 15217 2466 2466 13.71% 16.21%
B 17989 15222 23 23 0.13% 0.15%
C 17989 15222 26 26 0.14% 0.17%
D 17989 15222 658 658 3.66% 4.32%

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 14 238 9820508 31466.55 1559 1524 312.0
A 13 254 16233 47.14 1559 1524 312.0
A 15 191 15520 44.85 1559 1524 312.0
B 7 220 333182 981.32 1785 1739 337.8
B 4 80 115779 337.64 1785 1739 337.8
B 0 189 100844 293.43 1785 1739 337.8
C 3 233 760952 1914.56 1716 1728 396.6
C 14 238 269670 675.68 1716 1728 396.6
C 13 61 11965 25.81 1716 1728 396.6
D 1 52 2000010 4888.69 1706 1657 408.8
D 1 20 640977 1564.01 1706 1657 408.8
D 7 238 407779 993.52 1706 1657 408.8

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