ASTROSAT CZTI

Data Quality Report

Orbit 06239

Creation date: 2024-06-27T15:04:36.136584
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/AS1A02_151T01_9000000818_06239cztM0_level2.evt modeM0/AS1A02_151T01_9000000818_06239cztM0_level2_quad_clean.evt
Size (bytes)475,974,720105,088,320
Size453.9 MB 100.2 MB
Events in quadrant A3,284,260691,707
Events in quadrant B3,681,762696,799
Events in quadrant C2,981,738683,813
Events in quadrant D4,023,224654,619

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139923
B0151672
C0134612
D0163202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65381041.590701%
B65382333.563781%
C6538590.902417%
D65381432.187213%

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 7773 6538 7 7 0.09% 0.11%
B 7773 6538 95 95 1.22% 1.45%
C 7773 6539 0 0 0.00% 0.00%
D 7773 6539 50 50 0.64% 0.76%

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 8 15 93912 577.52 798 779 161.3
A 15 236 66463 407.31 798 779 161.3
A 14 111 46269 282.08 798 779 161.3
B 3 64 311600 2068.44 797 778 150.3
B 0 219 216463 1435.33 797 778 150.3
B 0 199 20508 131.3 797 778 150.3
C 13 61 6032 30.16 763 767 174.6
C 3 202 2061 7.41 763 767 174.6
C 8 222 2030 7.24 763 767 174.6
D 2 63 529847 2819.05 763 739 187.7
D 13 169 309627 1645.73 763 739 187.7
D 11 241 107884 570.86 763 739 187.7

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