ASTROSAT CZTI

Data Quality Report

Orbit 24876

Creation date: 2024-06-27T19:10:55.500910
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_027T16_9000003642_24876cztM0_level2.evt modeM0/AS1A07_027T16_9000003642_24876cztM0_level2_quad_clean.evt
Size (bytes)735,874,560124,231,680
Size701.8 MB 118.5 MB
Events in quadrant A4,405,482798,836
Events in quadrant B4,458,493805,266
Events in quadrant C5,809,802762,546
Events in quadrant D6,990,606758,313

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189882
B0190882
C0233202
D0268962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9192931.011749%
B9192961.044386%
C91913774.101839%
D91915195.646828%

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 10722 9194 0 0 0.00% 0.00%
B 10722 9194 1 1 0.01% 0.01%
C 10721 9193 136 136 1.27% 1.48%
D 10721 9193 454 454 4.23% 4.94%

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 6 16 47473 204.84 1128 1101 226.4
A 13 254 13483 54.69 1128 1101 226.4
A 3 137 10447 41.28 1128 1101 226.4
B 0 190 43803 197.93 1113 1083 215.8
B 12 111 26390 117.25 1113 1083 215.8
B 11 111 23870 105.58 1113 1083 215.8
C 7 247 1193331 4745.51 1070 1075 251.2
C 2 16 264976 1050.4 1070 1075 251.2
C 14 238 168715 667.25 1070 1075 251.2
D 1 52 1764693 6706.99 1085 1054 263.0
D 8 195 998969 3795.0 1085 1054 263.0
D 6 2 57814 215.85 1085 1054 263.0

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