ASTROSAT CZTI

Data Quality Report

Orbit 11912

Creation date: 2024-06-27T16:19:59.157608
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/AS1A04_088T05_9000001764_11912cztM0_level2.evt modeM0/AS1A04_088T05_9000001764_11912cztM0_level2_quad_clean.evt
Size (bytes)588,260,16083,756,160
Size561.0 MB 79.9 MB
Events in quadrant A3,416,066570,739
Events in quadrant B4,264,412560,746
Events in quadrant C2,929,472577,833
Events in quadrant D6,789,297397,474

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140863
B0167092
C0126842
D0242182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6135500.814996%
B61353385.509372%
C6135290.472698%
D6135172428.101059%

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 7446 6136 1 1 0.01% 0.02%
B 7446 6136 221 221 2.97% 3.60%
C 7446 6136 0 0 0.00% 0.00%
D 7446 6136 1528 1528 20.52% 24.90%

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 279767 1804.62 761 745 154.6
A 1 162 71526 457.79 761 745 154.6
A 1 178 37402 237.09 761 745 154.6
B 4 239 903913 6408.23 754 736 140.9
B 0 231 161088 1137.73 754 736 140.9
B 15 204 128188 904.3 754 736 140.9
C 13 61 5521 27.79 748 753 171.6
C 12 4 5195 25.89 748 753 171.6
C 0 207 3797 17.74 748 753 171.6
D 1 52 3649268 24788.04 613 597 147.2
D 8 195 327963 2224.03 613 597 147.2
D 5 222 271526 1840.62 613 597 147.2

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