ASTROSAT CZTI

Data Quality Report

Orbit 23674

Creation date: 2024-06-27T18:57:25.275794
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/AS1A08_004T02_9000003496_23674cztM0_level2.evt modeM0/AS1A08_004T02_9000003496_23674cztM0_level2_quad_clean.evt
Size (bytes)224,127,36057,124,800
Size213.7 MB 54.5 MB
Events in quadrant A1,429,490384,324
Events in quadrant B1,784,173381,800
Events in quadrant C1,375,679375,303
Events in quadrant D1,980,944362,867

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06842306
B07734379
C06686311
D08292315

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0684
B0675
C0682
D0675

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3175100.314961%
B3171621.955219%
C317260.189155%
D3170812.555205%

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 3236 3218 5 5 0.15% 0.16%
B 3225 3206 42 42 1.30% 1.31%
C 3229 3214 0 0 0.00% 0.00%
D 3243 3207 72 72 2.22% 2.25%

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 96 68615 938.83 352 344 72.7
A 13 254 6473 84.28 352 344 72.7
A 0 226 3116 38.12 352 344 72.7
B 3 64 205668 3053.33 346 339 67.2
B 0 189 116718 1730.6 346 339 67.2
B 15 32 28870 424.27 346 339 67.2
C 14 238 52585 661.76 331 332 79.0
C 8 208 8096 98.32 331 332 79.0
C 0 207 5410 64.31 331 332 79.0
D 7 238 184729 2232.97 333 322 82.6
D 12 235 158600 1916.57 333 322 82.6
D 12 233 142061 1716.31 333 322 82.6

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