ASTROSAT CZTI

Data Quality Report

Orbit 01017

Creation date: 2024-06-27T14:06:12.750168
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/AS1P01_998T02_9000000190_01017cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01017cztM0_level2_quad_clean.evt
Size (bytes)1,212,842,880127,952,640
Size1.1 GB 122.0 MB
Events in quadrant A8,981,571850,605
Events in quadrant B9,747,079852,387
Events in quadrant C9,204,677830,006
Events in quadrant D8,297,439816,916

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320572
B0343752
C0326684
D0300592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A755950.066146%
B7559310.410107%
C7558220.291082%
D7558290.383699%

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 7794 7561 331 331 4.25% 4.38%
B 7794 7561 441 441 5.66% 5.83%
C 7793 7560 350 350 4.49% 4.63%
D 7793 7560 249 249 3.20% 3.29%

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 0 231 17696 27.22 2331 2342 564.0
A 12 189 10386 14.26 2331 2342 564.0
A 11 79 10107 13.77 2331 2342 564.0
B 15 185 118509 201.59 2437 2444 575.8
B 8 234 85306 143.92 2437 2444 575.8
B 0 151 80268 135.17 2437 2444 575.8
C 15 241 387870 621.38 2238 2318 620.5
C 3 79 36734 55.47 2238 2318 620.5
C 3 111 34485 51.84 2238 2318 620.5
D 13 73 60278 86.84 2180 2255 668.2
D 9 49 31844 44.28 2180 2255 668.2
D 10 102 20828 27.8 2180 2255 668.2

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