ASTROSAT CZTI

Data Quality Report

Orbit 20190719_A06_003T04_9000003046_level2

Creation date: 2025-12-02T14:07:08.651442
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/AS1A06_003T04_9000003046cztM0_level2.fits modeM0/AS1A06_003T04_9000003046cztM0_level2_quad_clean.evt
Size (bytes)1,887,494,4001,639,025,280
Size1.8 GB 1.5 GB
Events in quadrant A11,751,9649,620,461
Events in quadrant B11,188,2769,663,784
Events in quadrant C11,500,9449,240,928
Events in quadrant D9,859,0828,252,178

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03986630
B04290170
C04131060
D05400040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038260
B038260
C038260
D038260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03410
B03410
C03410
D03410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18773721851.163862%
B18773737321.987887%
C18773737431.993747%
D187737103505.513032%

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 221047 187735 0 0 0.00% 0.00%
B 221047 187734 0 0 0.00% 0.00%
C 221047 187738 0 0 0.00% 0.00%
D 221047 187665 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 11374 11.45 3063 2881 741.8
A 7 110 9459 8.87 3063 2881 741.8
A 9 19 8920 8.14 3063 2881 741.8
B 2 9 9115 11.03 2963 2833 569.6
B 2 8 7604 8.38 2963 2833 569.6
B 3 17 7357 7.94 2963 2833 569.6
C 12 241 7900 6.57 3039 2842 769.6
C 12 250 7832 6.48 3039 2842 769.6
C 3 126 7792 6.43 3039 2842 769.6
D 6 231 6986 5.95 2826 2583 739.4
D 3 14 6907 5.85 2826 2583 739.4
D 10 189 6891 5.83 2826 2583 739.4

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