ASTROSAT CZTI

Data Quality Report

Orbit 20737

Creation date: 2024-06-27T18:18:58.510261
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_002T02_9000003064_20737cztM0_level2.evt modeM0/AS1A06_002T02_9000003064_20737cztM0_level2_quad_clean.evt
Size (bytes)1,923,166,080341,280,000
Size1.8 GB 325.5 MB
Events in quadrant A12,668,1782,184,523
Events in quadrant B13,107,3412,200,424
Events in quadrant C13,190,9312,053,512
Events in quadrant D17,435,3082,023,210

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0561946
B0569886
C0566056
D0704256

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05580
B05580
C05580
D05580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A272631920.704251%
B272633001.100392%
C272633881.423174%
D272635542.032058%

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 29878 27269 4 4 0.01% 0.01%
B 29878 27269 26 26 0.09% 0.10%
C 29878 27269 1 1 0.00% 0.00%
D 29878 27268 248 248 0.83% 0.91%

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 28387 38.11 3286 3218 660.4
A 3 137 27711 37.09 3286 3218 660.4
A 6 240 24713 32.55 3286 3218 660.4
B 3 64 183033 289.41 3269 3188 621.4
B 12 111 77331 119.31 3269 3188 621.4
B 11 111 67364 103.27 3269 3188 621.4
C 14 238 484188 660.09 3124 3148 728.8
C 7 247 392261 533.94 3124 3148 728.8
C 3 233 129984 174.05 3124 3148 728.8
D 1 20 2418504 3166.21 3162 3071 762.9
D 1 52 1975394 2585.37 3162 3071 762.9
D 5 222 341531 443.66 3162 3071 762.9

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