ASTROSAT CZTI

Data Quality Report

Orbit 36901

Creation date: 2024-06-27T21:33:01.289993
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/AS1C07_010T01_9000005246_36901cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36901cztM0_level2_quad_clean.evt
Size (bytes)336,879,36048,358,080
Size321.3 MB 46.1 MB
Events in quadrant A2,646,630368,518
Events in quadrant B824,9946,267
Events in quadrant C2,670,574364,198
Events in quadrant D3,684,326342,828

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01184
B01182
C01182
D01173

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011545313
B05623106
C011532370
D014995443

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5423100.184400%
B54815481100.000000%
C5394140.259548%
D54102614.824399%

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 9398 5471 2 2 0.02% 0.04%
B 9461 5481 0 0 0.00% 0.00%
C 9391 5454 12 12 0.13% 0.22%
D 9455 5469 226 226 2.39% 4.13%

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 10 83 225368 1785.72 621 608 125.9
A 13 254 8529 62.93 621 608 125.9
A 9 143 8506 62.75 621 608 125.9
B 12 243 760498 183963.73 11 11 4.1
B 12 144 14585 3525.49 11 11 4.1
B 0 213 823 196.42 11 11 4.1
C 15 214 230862 1645.1 601 604 140.0
C 0 10 89751 636.92 601 604 140.0
C 15 159 6299 40.69 601 604 140.0
D 13 249 716957 4859.24 596 579 147.4
D 12 233 232910 1575.92 596 579 147.4
D 2 153 115656 780.57 596 579 147.4

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