ASTROSAT CZTI

Data Quality Report

Orbit 08557

Creation date: 2024-06-27T15:34:14.841202
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/AS1G07_060T01_9000001200_08557cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08557cztM0_level2_quad_clean.evt
Size (bytes)3,090,176,640483,569,280
Size2.9 GB 461.2 MB
Events in quadrant A19,475,3573,029,414
Events in quadrant B20,380,1493,083,623
Events in quadrant C18,727,5303,022,560
Events in quadrant D32,165,5662,624,087

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08540
B08540
C08540
D08540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08758721
B08911212
C08586416
D012661224

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A420283230.768535%
B420324891.163399%
C420301500.356888%
D42026583513.884262%

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 50764 42040 48 48 0.09% 0.11%
B 50764 42041 176 176 0.35% 0.42%
C 50764 42039 0 0 0.00% 0.00%
D 50764 42036 5258 5258 10.36% 12.51%

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 15 223 382728 384.07 4911 4812 984.0
A 15 239 129690 126.91 4911 4812 984.0
A 0 226 45617 41.47 4911 4812 984.0
B 10 16 693347 738.69 4939 4819 932.1
B 0 214 172795 180.21 4939 4819 932.1
B 4 81 126228 130.25 4939 4819 932.1
C 9 54 40725 32.51 4785 4809 1104.9
C 13 61 36222 28.43 4785 4809 1104.9
C 8 222 23716 17.11 4785 4809 1104.9
D 4 95 13937671 13109.69 4361 4256 1062.8
D 1 52 883713 827.46 4361 4256 1062.8
D 7 71 214488 197.8 4361 4256 1062.8

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