ASTROSAT CZTI

Data Quality Report

Orbit 19527

Creation date: 2024-06-27T18:03:53.879660
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/AS1T03_108T01_9000002898_19527cztM0_level2.evt modeM0/AS1T03_108T01_9000002898_19527cztM0_level2_quad_clean.evt
Size (bytes)458,035,20067,893,120
Size436.8 MB 64.7 MB
Events in quadrant A3,241,548411,187
Events in quadrant B3,408,060414,231
Events in quadrant C3,299,423400,007
Events in quadrant D3,499,153395,035

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130431
B0135501
C0131301
D0139511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6237861.378868%
B62371262.020202%
C62371081.731602%
D62371302.084335%

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 7467 6237 0 0 0.00% 0.00%
B 7467 6237 16 16 0.21% 0.26%
C 7467 6238 1 1 0.01% 0.02%
D 7467 6237 50 50 0.67% 0.80%

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 13 254 7980 42.42 840 824 168.7
A 0 226 7271 38.22 840 824 168.7
A 3 137 6191 31.82 840 824 168.7
B 7 220 62389 393.03 823 804 156.7
B 0 244 47361 297.13 823 804 156.7
B 3 64 46196 289.69 823 804 156.7
C 14 238 124922 681.86 791 799 182.0
C 3 233 63420 344.01 791 799 182.0
C 9 221 14244 73.86 791 799 182.0
D 1 52 106726 536.73 812 789 197.4
D 12 233 102582 515.73 812 789 197.4
D 13 104 85761 430.51 812 789 197.4

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