ASTROSAT CZTI

Data Quality Report

Orbit 20170816_A03_050T01_9000001468_level2

Creation date: 2025-11-16T18:30:54.852434
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_050T01_9000001468cztM0_level2.fits modeM0/AS1A03_050T01_9000001468cztM0_level2_quad_clean.evt
Size (bytes)733,109,760856,641,600
Size699.1 MB 817.0 MB
Events in quadrant A4,438,6505,322,593
Events in quadrant B4,271,8245,332,695
Events in quadrant C4,382,5085,241,233
Events in quadrant D3,755,1344,695,770

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01657240
B01694270
C01596770
D02098690

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01290
B01290
C01290
D01290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015920
B015920
C015920
D015920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7807611981.534402%
B7807410361.326946%
C780764450.569957%
D7807624613.152057%

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 90315 78052 0 0 0.00% 0.00%
B 90315 78069 0 0 0.00% 0.00%
C 90315 78070 0 0 0.00% 0.00%
D 90315 78058 0 0 0.00% 0.00%

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 29 4293 11.17 1157 1086 287.2
A 7 110 3663 8.97 1157 1086 287.2
A 0 30 3321 7.78 1157 1086 287.2
B 2 9 3756 12.23 1132 1086 218.4
B 3 17 2874 8.19 1132 1086 218.4
B 14 254 2832 8.0 1132 1086 218.4
C 12 241 3118 6.83 1159 1083 297.9
C 2 191 2925 6.18 1159 1083 297.9
C 9 188 2899 6.1 1159 1083 297.9
D 6 231 2819 6.45 1072 977 285.5
D 3 14 2802 6.39 1072 977 285.5
D 10 189 2697 6.02 1072 977 285.5

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