ASTROSAT CZTI

Data Quality Report

Orbit 20191008_A07_006T01_9000003226_level2

Creation date: 2025-12-04T14:13:59.028292
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/AS1A07_006T01_9000003226cztM0_level2.fits modeM0/AS1A07_006T01_9000003226cztM0_level2_quad_clean.evt
Size (bytes)547,585,920471,879,360
Size522.2 MB 450.0 MB
Events in quadrant A3,432,6942,925,451
Events in quadrant B3,313,1642,945,515
Events in quadrant C3,394,6242,855,223
Events in quadrant D2,480,6241,610,479

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011720
B011740
C011740
D011740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01214250
B01239730
C01186770
D02891610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0870
B0870
C0870
D0870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A576157051.223640%
B576219861.711182%
C576129791.699299%
D576102230938.724180%

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 66364 57620 0 0 0.00% 0.00%
B 66364 57629 0 0 0.00% 0.00%
C 66364 57620 0 0 0.00% 0.00%
D 66364 57589 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 3212 10.68 895 841 222.0
A 7 110 2735 8.53 895 841 222.0
A 0 30 2584 7.85 895 841 222.0
B 2 9 2706 10.62 877 834 176.2
B 2 8 2237 7.96 877 834 176.2
B 5 232 2222 7.88 877 834 176.2
C 1 81 2626 7.81 894 835 229.3
C 1 80 2563 7.54 894 835 229.3
C 3 234 2401 6.83 894 835 229.3
D 6 231 1767 5.91 708 645 189.8
D 15 46 1737 5.75 708 645 189.8
D 6 67 1734 5.73 708 645 189.8

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