ASTROSAT CZTI

Data Quality Report

Orbit 34596

Creation date: 2022-02-20T16:23:58.784465
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/AS1C07_014T01_9000004950_34596cztM0_level2.evt modeM0/AS1C07_014T01_9000004950_34596cztM0_level2_quad_clean.evt
Size (bytes)561,191,04095,849,280
Size535.2 MB 91.4 MB
Events in quadrant A2,733,754674,997
Events in quadrant B3,715,121657,288
Events in quadrant C2,969,874655,215
Events in quadrant D7,242,064567,082

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109313
B0142312
C0118752
D0249922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496570.140987%
B49653727.492447%
C4965300.604230%
D496565113.111782%

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 7086 4966 0 0 0.00% 0.00%
B 7086 4966 254 254 3.58% 5.11%
C 7086 4966 17 17 0.24% 0.34%
D 7086 4966 778 778 10.98% 15.67%

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 42867 303.8 690 682 138.9
A 9 143 17763 123.01 690 682 138.9
A 13 6 10997 74.28 690 682 138.9
B 5 172 931733 7433.63 663 653 125.3
B 0 190 69140 546.79 663 653 125.3
B 4 232 32357 253.12 663 653 125.3
C 15 214 214906 1422.35 651 660 150.6
C 0 207 85044 560.22 651 660 150.6
C 0 10 78634 517.66 651 660 150.6
D 8 195 3720387 24046.81 631 616 154.7
D 13 249 208160 1341.69 631 616 154.7
D 1 52 205663 1325.55 631 616 154.7

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