ASTROSAT CZTI

Data Quality Report

Orbit 20210731_C06_006T05_9000004600_level2

Creation date: 2025-12-28T00:11:25.958838
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/AS1C06_006T05_9000004600cztM0_level2.fits modeM0/AS1C06_006T05_9000004600cztM0_level2_quad_clean.evt
Size (bytes)83,759,04089,141,760
Size79.9 MB 85.0 MB
Events in quadrant A526,702577,748
Events in quadrant B488,124562,472
Events in quadrant C475,980467,531
Events in quadrant D435,714481,596

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179080
B0274810
C0266620
D0283860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02060
C02120
D02080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8700961.103448%
B86732422.790269%
C8665116713.467975%
D86622993.451859%

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 15709 8735 0 0 0.00% 0.00%
B 15709 8709 0 0 0.00% 0.00%
C 15708 8704 0 0 0.00% 0.00%
D 15709 8694 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 29 495 10.33 137 129 35.4
A 7 110 450 9.06 137 129 35.4
A 9 19 409 7.9 137 129 35.4
B 2 9 380 8.99 129 123 28.6
B 5 232 326 7.1 129 123 28.6
B 2 8 318 6.82 129 123 28.6
C 1 81 370 7.53 126 118 33.4
C 1 80 366 7.41 126 118 33.4
C 3 187 338 6.58 126 118 33.4
D 4 246 337 6.49 124 113 34.5
D 6 231 319 5.96 124 113 34.5
D 6 38 313 5.79 124 113 34.5

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