ASTROSAT CZTI

Data Quality Report

Orbit 28191

Creation date: 2024-06-27T19:48:59.690894
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/AS1A10_090T16_9000004070_28191cztM0_level2.evt modeM0/AS1A10_090T16_9000004070_28191cztM0_level2_quad_clean.evt
Size (bytes)1,583,582,400247,705,920
Size1.5 GB 236.2 MB
Events in quadrant A8,263,8421,656,299
Events in quadrant B8,690,7001,670,021
Events in quadrant C8,680,7201,585,451
Events in quadrant D21,103,2551,342,953

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366360
B0376420
C0374060
D0750130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18086730.403627%
B180871080.597114%
C180872341.293747%
D18087413022.834080%

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 20081 18089 1 1 0.00% 0.01%
B 20082 18089 10 10 0.05% 0.06%
C 20082 18089 14 14 0.07% 0.08%
D 20082 18087 3683 3683 18.34% 20.36%

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 5 98 47212 106.35 2123 2075 424.4
A 13 254 31415 69.13 2123 2075 424.4
A 3 137 20975 44.53 2123 2075 424.4
B 15 32 186850 463.47 2101 2042 398.7
B 10 245 72785 177.41 2101 2042 398.7
B 12 111 50692 122.01 2101 2042 398.7
C 3 233 348485 732.82 2034 2042 472.8
C 14 238 327642 688.73 2034 2042 472.8
C 15 208 52489 106.71 2034 2042 472.8
D 1 52 12375734 28654.94 1807 1758 431.8
D 8 195 637384 1471.95 1807 1758 431.8
D 2 153 457296 1054.91 1807 1758 431.8

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