ASTROSAT CZTI

Data Quality Report

Orbit 25847

Creation date: 2024-06-27T19:22:02.782445
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/AS1A07_068T01_9000003756_25847cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25847cztM0_level2_quad_clean.evt
Size (bytes)626,492,16096,785,280
Size597.5 MB 92.3 MB
Events in quadrant A3,298,655663,361
Events in quadrant B3,174,243665,039
Events in quadrant C7,749,664526,862
Events in quadrant D4,314,565626,500

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138680
B0134810
C0272570
D0171700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6434530.823749%
B6435580.901321%
C6435230035.742036%
D64352664.133644%

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 7409 6435 1 1 0.01% 0.02%
B 7410 6436 0 0 0.00% 0.00%
C 7410 6436 2057 2057 27.76% 31.96%
D 7410 6436 196 196 2.65% 3.05%

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 6 16 122555 739.46 816 801 164.7
A 0 13 24203 142.13 816 801 164.7
A 13 254 9029 49.97 816 801 164.7
B 6 36 20885 130.19 802 780 154.4
B 12 111 18824 116.84 802 780 154.4
B 11 111 17413 107.71 802 780 154.4
C 7 87 5318093 38848.66 587 591 136.9
C 14 238 93333 677.56 587 591 136.9
C 3 233 36301 260.89 587 591 136.9
D 1 52 589782 3162.03 780 760 186.3
D 7 80 571202 3062.29 780 760 186.3
D 12 233 171417 916.13 780 760 186.3

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