ASTROSAT CZTI

Data Quality Report

Orbit 35082

Creation date: 2022-03-25T14:33:50.806702
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/AS1T05_015T01_9000005026_35082cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35082cztM0_level2_quad_clean.evt
Size (bytes)1,462,020,480193,020,480
Size1.4 GB 184.1 MB
Events in quadrant A7,721,8271,194,990
Events in quadrant B9,262,4231,218,660
Events in quadrant C8,749,4731,213,829
Events in quadrant D17,457,6281,105,622

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332375
B0380524
C0355924
D0633254

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16132560.347136%
B161323282.033226%
C16132980.607488%
D1613215669.707414%

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 21592 16136 33 33 0.15% 0.20%
B 21592 16136 156 156 0.72% 0.97%
C 21592 16136 79 79 0.37% 0.49%
D 21592 16136 1219 1219 5.65% 7.55%

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 188198 493.72 1886 1849 377.4
A 15 17 68231 175.88 1886 1849 377.4
A 5 168 62870 161.67 1886 1849 377.4
B 5 172 1107597 3091.88 1868 1817 357.6
B 0 189 345140 959.97 1868 1817 357.6
B 5 255 225946 626.69 1868 1817 357.6
C 15 214 666369 1569.48 1832 1843 423.4
C 12 250 355135 834.41 1832 1843 423.4
C 10 49 279893 656.7 1832 1843 423.4
D 8 195 7378667 17001.61 1768 1718 433.9
D 2 250 1120631 2578.75 1768 1718 433.9
D 10 118 1112700 2560.47 1768 1718 433.9

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