ASTROSAT CZTI

Data Quality Report

Orbit 15388

Creation date: 2024-06-27T17:07:50.820023
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/AS1C03_001T01_9000002270_15388cztM0_level2.evt modeM0/AS1C03_001T01_9000002270_15388cztM0_level2_quad_clean.evt
Size (bytes)645,822,72097,470,720
Size615.9 MB 93.0 MB
Events in quadrant A4,329,592645,017
Events in quadrant B6,250,556607,528
Events in quadrant C3,119,821675,028
Events in quadrant D5,433,827585,026

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170662
B0228641
C0132901
D0205971

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62773976.324677%
B6277104616.664011%
C6277320.509798%
D6277111017.683607%

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 7343 6279 288 288 3.92% 4.59%
B 7343 6279 779 779 10.61% 12.41%
C 7343 6279 0 0 0.00% 0.00%
D 7343 6279 789 789 10.74% 12.57%

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 14 238 1073586 7412.49 720 704 144.7
A 14 237 451646 3115.53 720 704 144.7
A 9 143 21856 146.13 720 704 144.7
B 10 245 2784190 21418.65 694 677 130.0
B 8 3 200324 1536.25 694 677 130.0
B 10 16 85702 654.25 694 677 130.0
C 3 233 260099 1554.2 732 735 166.9
C 13 61 5439 28.19 732 735 166.9
C 7 247 2204 8.8 732 735 166.9
D 9 68 1436107 8645.93 683 664 166.0
D 13 122 597185 3592.95 683 664 166.0
D 7 38 249723 1500.13 683 664 166.0

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