ASTROSAT CZTI

Data Quality Report

Orbit 09479

Creation date: 2024-06-27T15:46:40.141108
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/AS1A03_005T01_9000001348_09479cztM0_level2.evt modeM0/AS1A03_005T01_9000001348_09479cztM0_level2_quad_clean.evt
Size (bytes)224,395,20041,734,080
Size214.0 MB 39.8 MB
Events in quadrant A1,657,230269,867
Events in quadrant B1,514,024270,442
Events in quadrant C1,474,292267,084
Events in quadrant D1,960,291257,825

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067662
B062561
C060801
D078171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2776913.278098%
B2776863.097983%
C2776652.341499%
D2776822.953890%

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 4041 2777 0 0 0.00% 0.00%
B 4041 2777 0 0 0.00% 0.00%
C 4041 2777 0 0 0.00% 0.00%
D 4041 2777 3 3 0.07% 0.11%

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 8 5 155159 1942.83 389 382 79.7
A 1 162 4773 55.12 389 382 79.7
A 0 226 3649 41.01 389 382 79.7
B 4 173 20485 273.53 384 375 73.5
B 12 111 7861 101.82 384 375 73.5
B 11 111 6547 83.95 384 375 73.5
C 12 4 5248 55.83 376 377 87.3
C 13 61 2876 28.64 376 377 87.3
C 9 68 2127 20.06 376 377 87.3
D 8 195 390976 4126.78 376 367 94.7
D 13 169 78123 821.49 376 367 94.7
D 1 52 33641 351.54 376 367 94.7

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