ASTROSAT CZTI

Data Quality Report

Orbit 19298

Creation date: 2024-06-27T18:01:06.359050
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/AS1A05_204T01_9000002856_19298cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19298cztM0_level2_quad_clean.evt
Size (bytes)541,177,920103,913,280
Size516.1 MB 99.1 MB
Events in quadrant A3,433,133676,851
Events in quadrant B3,596,292682,209
Events in quadrant C3,590,576652,475
Events in quadrant D5,268,677621,656

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152262
B0155512
C0155432
D0207582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7378400.542152%
B7379741.002846%
C73791181.599133%
D73794115.569860%

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 8643 7380 0 0 0.00% 0.00%
B 8644 7381 1 1 0.01% 0.01%
C 8644 7381 13 13 0.15% 0.18%
D 8644 7380 269 269 3.11% 3.64%

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 4 2 13879 71.99 887 868 180.7
A 13 254 11067 56.43 887 868 180.7
A 0 226 7650 37.52 887 868 180.7
B 0 229 74337 434.46 886 864 169.1
B 12 111 20650 117.0 886 864 169.1
B 11 111 18268 102.91 886 864 169.1
C 14 238 131454 648.76 855 861 201.3
C 9 54 122782 605.67 855 861 201.3
C 13 61 5941 25.24 855 861 201.3
D 1 52 1687194 8178.45 845 821 206.2
D 13 138 142058 684.96 845 821 206.2
D 13 104 83597 401.44 845 821 206.2

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