ASTROSAT CZTI

Data Quality Report

Orbit 19958

Creation date: 2024-06-27T18:09:11.312888
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_160T01_9000002970_19958cztM0_level2.evt modeM0/AS1A05_160T01_9000002970_19958cztM0_level2_quad_clean.evt
Size (bytes)798,641,28092,148,480
Size761.6 MB 87.9 MB
Events in quadrant A8,101,080484,605
Events in quadrant B4,960,956579,935
Events in quadrant C5,226,574542,100
Events in quadrant D5,265,078534,300

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022426
B022634
C022840
D022634

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0359005882
B0242103775
C0248193668
D0259204316

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252
B0252
C0262
D0242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9293150916.238029%
B93791091.162171%
C93881251.331487%
D93211561.673640%

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 13451 9584 1207 1207 8.97% 12.59%
B 13451 9724 19 19 0.14% 0.20%
C 13451 9692 5 5 0.04% 0.05%
D 13450 9613 100 100 0.74% 1.04%

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 14 238 3807372 17216.75 1109 1091 221.1
A 14 254 18276 77.73 1109 1091 221.1
A 0 226 9836 39.55 1109 1091 221.1
B 7 220 122556 532.81 1210 1182 227.8
B 12 111 26817 112.53 1210 1182 227.8
B 4 171 25990 108.9 1210 1182 227.8
C 9 221 273381 1016.43 1160 1171 267.8
C 3 233 206511 766.74 1160 1171 267.8
C 14 238 182844 678.37 1160 1171 267.8
D 12 233 386577 1354.52 1184 1152 284.5
D 12 218 171417 598.37 1184 1152 284.5
D 9 1 115807 402.94 1184 1152 284.5

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