ASTROSAT CZTI

Data Quality Report

Orbit 20576

Creation date: 2024-06-27T18:14:57.882221
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/AS1A05_198T01_9000003014_20576cztM0_level2.evt modeM0/AS1A05_198T01_9000003014_20576cztM0_level2_quad_clean.evt
Size (bytes)182,704,32030,110,400
Size174.2 MB 28.7 MB
Events in quadrant A1,146,567188,844
Events in quadrant B1,275,873189,352
Events in quadrant C1,149,032183,250
Events in quadrant D1,792,365173,567

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08732
B08836
C08935
D08436

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088283741
B094554045
C088823789
D0145517620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2468251.012966%
B2475522.101010%
C2469471.903605%
D23851727.211740%

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 5508 2709 0 0 0.00% 0.00%
B 5594 2689 4 4 0.07% 0.15%
C 5584 2699 0 0 0.00% 0.00%
D 5440 2592 132 132 2.43% 5.09%

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 0 226 2549 36.44 297 290 62.0
A 3 137 2490 35.49 297 290 62.0
A 12 194 2179 30.47 297 290 62.0
B 7 220 54448 925.98 296 288 58.5
B 0 197 26676 451.16 296 288 58.5
B 0 190 8436 139.31 296 288 58.5
C 14 238 44152 640.97 283 285 68.4
C 13 61 2027 25.45 283 285 68.4
C 8 208 1151 12.65 283 285 68.4
D 1 52 271702 4026.69 270 262 67.4
D 7 96 217651 3224.87 270 262 67.4
D 5 222 202811 3004.72 270 262 67.4

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