ASTROSAT CZTI

Data Quality Report

Orbit 41472

Creation date: 2024-06-27T22:29:28.232142
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/AS1A12_014T01_9000005674_41472cztM0_level2.fits modeM0/AS1A12_014T01_9000005674_41472cztM0_level2_quad_clean.evt
Size (bytes)357,606,72087,822,720
Size341.0 MB 83.8 MB
Events in quadrant A2,788,108594,686
Events in quadrant B2,715,423608,258
Events in quadrant C3,022,839564,144
Events in quadrant D4,302,721524,893

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116253
B0117102
C0123102
D0164612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5245140.266921%
B5245400.762631%
C52452314.404194%
D52452434.632984%

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 7067 5246 5 5 0.07% 0.10%
B 7067 5246 24 24 0.34% 0.46%
C 7067 5246 213 213 3.01% 4.06%
D 7067 5246 219 219 3.10% 4.17%

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 10 83 558406 4796.79 568 556 116.3
A 13 248 19262 160.85 568 556 116.3
A 2 79 8522 68.5 568 556 116.3
B 0 190 209561 1927.92 569 553 108.4
B 5 255 89640 821.75 569 553 108.4
B 0 245 50872 464.15 569 553 108.4
C 0 10 616335 4846.0 544 546 127.1
C 15 214 213067 1672.45 544 546 127.1
C 4 254 33323 257.94 544 546 127.1
D 12 79 1113174 8211.8 553 538 135.5
D 1 52 243772 1795.19 553 538 135.5
D 1 47 218743 1610.46 553 538 135.5

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