ASTROSAT CZTI

Data Quality Report

Orbit 26752

Creation date: 2024-06-27T19:32:26.926295
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/AS1T03_223T01_9000003850_26752cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26752cztM0_level2_quad_clean.evt
Size (bytes)833,114,88065,957,760
Size794.5 MB 62.9 MB
Events in quadrant A3,667,929418,239
Events in quadrant B7,986,650358,424
Events in quadrant C3,522,970408,268
Events in quadrant D9,608,986352,256

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149290
B0279210
C0142780
D0330240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65871071.624412%
B6587214032.488234%
C65871602.429027%
D6587237636.071049%

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 7427 6588 2 2 0.03% 0.03%
B 7427 6587 1677 1677 22.58% 25.46%
C 7427 6588 14 14 0.19% 0.21%
D 7427 6588 1821 1821 24.52% 27.64%

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 0 13 409951 2410.56 844 828 169.7
A 13 254 11339 61.93 844 828 169.7
A 3 137 7806 41.11 844 828 169.7
B 0 189 5194196 39275.69 700 682 132.2
B 15 33 23517 172.68 700 682 132.2
B 12 111 15969 115.6 700 682 132.2
C 14 176 151691 806.94 799 803 187.0
C 14 238 128285 681.77 799 803 187.0
C 2 16 63715 336.45 799 803 187.0
D 7 80 5093399 29364.54 694 679 173.4
D 1 52 1095072 6310.25 694 679 173.4
D 13 168 278278 1600.63 694 679 173.4

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