ASTROSAT CZTI

Data Quality Report

Orbit 18269

Creation date: 2024-06-27T17:47:39.297885
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/AS1A06_006T01_9000002720_18269cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18269cztM0_level2_quad_clean.evt
Size (bytes)169,277,76022,855,680
Size161.4 MB 21.8 MB
Events in quadrant A1,068,629139,639
Events in quadrant B1,073,321142,290
Events in quadrant C1,049,811136,781
Events in quadrant D1,800,740131,465

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042591
B042861
C042271
D067501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19351306.718346%
B19351276.563307%
C19341397.187177%
D19341859.565667%

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 2840 1936 0 0 0.00% 0.00%
B 2840 1936 1 1 0.04% 0.05%
C 2839 1935 0 0 0.00% 0.00%
D 2839 1935 9 9 0.32% 0.47%

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 15 174 14708 252.25 272 265 57.3
A 4 2 5445 90.47 272 265 57.3
A 0 226 2408 37.43 272 265 57.3
B 7 220 6853 121.25 268 261 54.4
B 12 111 6410 113.1 268 261 54.4
B 11 111 5777 101.46 268 261 54.4
C 14 238 39565 637.47 258 258 61.7
C 13 61 1889 26.45 258 258 61.7
C 3 233 981 11.73 258 258 61.7
D 7 238 519228 7894.84 262 253 65.7
D 1 52 238050 3617.46 262 253 65.7
D 13 168 33693 508.7 262 253 65.7

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