ASTROSAT CZTI

Data Quality Report

Orbit 26493

Creation date: 2024-06-27T19:29:46.925372
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_017T01_9000003836_26493cztM0_level2.evt modeM0/AS1C05_017T01_9000003836_26493cztM0_level2_quad_clean.evt
Size (bytes)366,825,60040,052,160
Size349.8 MB 38.2 MB
Events in quadrant A1,915,433247,420
Events in quadrant B1,965,360251,193
Events in quadrant C1,999,304238,408
Events in quadrant D4,983,924220,194

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077250
B078800
C080280
D0173080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3601421.166343%
B3601802.221605%
C36011072.971397%
D3601108930.241600%

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 3886 3602 0 0 0.00% 0.00%
B 3886 3602 2 2 0.05% 0.06%
C 3886 3602 0 0 0.00% 0.00%
D 3886 3602 719 719 18.50% 19.96%

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 16 9579 88.91 493 484 102.3
A 13 254 6275 56.61 493 484 102.3
A 12 194 5080 44.93 493 484 102.3
B 0 190 21722 223.24 490 478 95.2
B 5 172 16155 164.74 490 478 95.2
B 12 111 11472 115.53 490 478 95.2
C 3 233 94125 830.82 469 472 112.7
C 14 238 74376 655.62 469 472 112.7
C 4 254 4376 34.63 469 472 112.7
D 1 52 3193037 30397.24 428 417 105.0
D 7 80 105341 998.99 428 417 105.0
D 12 233 36651 344.99 428 417 105.0

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