ASTROSAT CZTI

Data Quality Report

Orbit 07677

Creation date: 2024-06-27T15:22:37.013833
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_029T01_9000001058_07677cztM0_level2.evt modeM0/AS1A02_029T01_9000001058_07677cztM0_level2_quad_clean.evt
Size (bytes)936,155,52081,276,480
Size892.8 MB 77.5 MB
Events in quadrant A3,882,075508,461
Events in quadrant B4,360,713512,496
Events in quadrant C14,026,971390,568
Events in quadrant D5,530,666481,255

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170503
B0182722
C0472952
D0219602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81651912.339253%
B81653454.225352%
C8165373345.719535%
D81654895.988977%

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 8660 8169 0 0 0.00% 0.00%
B 8660 8168 62 62 0.72% 0.76%
C 8660 8168 2926 2926 33.79% 35.82%
D 8660 8169 228 228 2.63% 2.79%

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 13 248 14064 63.16 1000 973 207.3
A 0 226 10062 43.85 1000 973 207.3
A 12 194 8951 38.49 1000 973 207.3
B 4 239 281694 1455.19 996 970 192.9
B 0 219 111005 570.39 996 970 192.9
B 0 214 31754 159.57 996 970 192.9
C 9 68 10892588 58224.96 797 800 187.1
C 8 208 14619 73.87 797 800 187.1
C 13 61 6217 28.96 797 800 187.1
D 2 152 953602 3990.43 960 929 238.7
D 13 104 315512 1317.68 960 929 238.7
D 12 0 229345 956.76 960 929 238.7

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