ASTROSAT CZTI

Data Quality Report

Orbit 20170224_G06_016T01_9000001052_level2

Creation date: 2025-11-09T18:51:45.828767
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/AS1G06_016T01_9000001052cztM0_level2.fits modeM0/AS1G06_016T01_9000001052cztM0_level2_quad_clean.evt
Size (bytes)440,256,960379,117,440
Size419.9 MB 361.6 MB
Events in quadrant A2,808,4032,251,343
Events in quadrant B2,706,0462,265,781
Events in quadrant C2,090,8481,628,965
Events in quadrant D2,392,2722,005,673

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01039830
B01019780
C02118060
D01124310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0670
C0670
D0670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09900
B09900
C09930
D09970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487736701.373711%
B488045841.196623%
C476571189424.957509%
D486648511.748726%

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 57688 49912 0 0 0.00% 0.00%
B 57688 49950 0 0 0.00% 0.00%
C 57688 48194 0 0 0.00% 0.00%
D 57688 49787 0 0 0.00% 0.00%

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 29 2714 11.0 730 682 184.7
A 7 110 2265 8.57 730 682 184.7
A 0 30 2113 7.75 730 682 184.7
B 2 9 2363 11.66 713 676 144.7
B 3 17 1871 8.26 713 676 144.7
B 12 226 1820 7.91 713 676 144.7
C 1 81 1471 6.71 553 514 142.5
C 1 80 1462 6.65 553 514 142.5
C 12 241 1431 6.43 553 514 142.5
D 6 231 1746 6.2 682 618 181.9
D 7 5 1717 6.04 682 618 181.9
D 6 67 1706 5.98 682 618 181.9

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