ASTROSAT CZTI

Data Quality Report

Orbit 28686

Creation date: 2024-06-27T19:54:55.099161
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/AS1A10_021T04_9000004116_28686cztM0_level2.evt modeM0/AS1A10_021T04_9000004116_28686cztM0_level2_quad_clean.evt
Size (bytes)598,898,88097,021,440
Size571.2 MB 92.5 MB
Events in quadrant A3,268,211632,010
Events in quadrant B3,331,783650,406
Events in quadrant C3,982,144613,675
Events in quadrant D7,098,333571,916

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139212
B0140992
C0162472
D0256632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6740270.400593%
B6740460.682493%
C67401552.299703%
D6740147021.810089%

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 7850 6742 1 1 0.01% 0.01%
B 7850 6741 3 3 0.04% 0.04%
C 7850 6741 5 5 0.06% 0.07%
D 7850 6741 1417 1417 18.05% 21.02%

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 12 96 21212 121.47 841 824 167.8
A 13 254 10339 56.69 841 824 167.8
A 3 137 7987 42.68 841 824 167.8
B 10 245 52790 328.56 833 813 158.2
B 12 111 19449 117.8 833 813 158.2
B 11 111 17804 107.4 833 813 158.2
C 3 233 668824 3564.05 800 804 187.4
C 14 238 154597 820.52 800 804 187.4
C 14 254 40093 209.62 800 804 187.4
D 1 52 3666833 21802.4 711 692 168.2
D 13 104 372925 2213.66 711 692 168.2
D 8 195 212795 1261.37 711 692 168.2

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