ASTROSAT CZTI

Data Quality Report

Orbit 26677

Creation date: 2024-06-27T19:31:40.546720
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/AS1A09_145T01_9000003848_26677cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26677cztM0_level2_quad_clean.evt
Size (bytes)453,692,16085,072,320
Size432.7 MB 81.1 MB
Events in quadrant A3,558,739561,522
Events in quadrant B3,051,488566,820
Events in quadrant C3,191,700538,397
Events in quadrant D3,564,490524,082

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143340
B0121690
C0127740
D0138320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5514751.360174%
B5515540.979148%
C5515951.722575%
D55141562.829162%

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 6839 5515 4 4 0.06% 0.07%
B 6840 5516 1 1 0.01% 0.02%
C 6840 5516 4 4 0.06% 0.07%
D 6839 5515 103 103 1.51% 1.87%

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 537484 3449.65 780 769 155.6
A 4 2 17514 107.63 780 769 155.6
A 13 254 8683 50.87 780 769 155.6
B 0 189 32316 220.56 761 747 143.1
B 12 111 16096 107.24 761 747 143.1
B 0 245 15911 105.94 761 747 143.1
C 3 233 142201 836.99 733 742 169.0
C 14 238 119823 704.59 733 742 169.0
C 5 37 44373 258.16 733 742 169.0
D 7 80 487773 2684.42 747 728 181.4
D 2 250 118032 646.54 747 728 181.4
D 1 52 54879 298.46 747 728 181.4

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