ASTROSAT CZTI

Data Quality Report

Orbit 30508

Creation date: 2024-06-27T20:16:12.854392
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/AS1C05_019T04_9000004388_30508cztM0_level2.evt modeM0/AS1C05_019T04_9000004388_30508cztM0_level2_quad_clean.evt
Size (bytes)492,134,40087,114,240
Size469.3 MB 83.1 MB
Events in quadrant A2,964,307566,189
Events in quadrant B4,831,653562,272
Events in quadrant C2,988,586541,529
Events in quadrant D3,697,470533,518

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127691
B0189811
C0127651
D0148301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6227651.043841%
B62281211.942839%
C6228981.573539%
D62281352.167630%

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 7137 6228 2 2 0.03% 0.03%
B 7138 6229 10 10 0.14% 0.16%
C 7138 6229 0 0 0.00% 0.00%
D 7138 6229 93 93 1.30% 1.49%

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 12 96 33281 217.36 752 736 149.7
A 13 254 11402 71.24 752 736 149.7
A 8 192 9915 61.3 752 736 149.7
B 6 159 1741075 12403.46 738 720 140.3
B 0 229 120580 854.24 738 720 140.3
B 5 172 24017 166.04 738 720 140.3
C 14 238 127037 761.1 712 717 166.0
C 3 233 49115 291.61 712 717 166.0
C 14 254 14562 83.42 712 717 166.0
D 8 195 461151 2671.22 718 699 172.4
D 2 250 304469 1762.26 718 699 172.4
D 13 249 73620 423.03 718 699 172.4

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