ASTROSAT CZTI

Data Quality Report

Orbit 14182

Creation date: 2024-06-27T16:51:20.944673
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/AS1A04_229T01_9000002096_14182cztM0_level2.evt modeM0/AS1A04_229T01_9000002096_14182cztM0_level2_quad_clean.evt
Size (bytes)2,439,858,240440,112,960
Size2.3 GB 419.7 MB
Events in quadrant A16,603,4842,774,946
Events in quadrant B18,495,7222,901,298
Events in quadrant C16,715,9772,705,380
Events in quadrant D19,749,6732,580,237

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0712898
B0761227
C0711487
D0820657

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07040
B07040
C07040
D07040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A344712350.681732%
B344715021.456297%
C344712200.638218%
D344713140.910911%

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 39103 34478 4 4 0.01% 0.01%
B 39103 34479 114 114 0.29% 0.33%
C 39103 34479 5 5 0.01% 0.01%
D 39103 34478 76 76 0.19% 0.22%

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 12 189 268819 312.16 4217 4132 847.9
A 15 222 79944 89.41 4217 4132 847.9
A 0 226 37011 38.78 4217 4132 847.9
B 0 85 656279 823.07 4224 4124 792.3
B 0 219 482364 603.58 4224 4124 792.3
B 0 189 220727 273.37 4224 4124 792.3
C 3 233 634588 673.56 4086 4117 936.0
C 0 207 123295 127.32 4086 4117 936.0
C 13 61 29485 27.1 4086 4117 936.0
D 8 195 2468911 2556.86 4062 3967 964.1
D 7 254 451976 464.71 4062 3967 964.1
D 2 152 363944 373.4 4062 3967 964.1

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