ASTROSAT CZTI

Data Quality Report

Orbit 30550

Creation date: 2024-06-27T20:16:49.148487
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_053T20_9000004398_30550cztM0_level2.evt modeM0/AS1A10_053T20_9000004398_30550cztM0_level2_quad_clean.evt
Size (bytes)717,557,760136,569,600
Size684.3 MB 130.2 MB
Events in quadrant A4,312,134897,172
Events in quadrant B7,154,743887,183
Events in quadrant C4,800,721857,767
Events in quadrant D4,836,087850,842

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189532
B0282612
C0198982
D0204032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9273600.647040%
B92731912.059743%
C92731992.146015%
D92731061.143104%

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 9793 9274 3 3 0.03% 0.03%
B 9793 9274 36 36 0.37% 0.39%
C 9793 9274 31 31 0.32% 0.33%
D 9793 9274 67 67 0.68% 0.72%

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 8 192 35357 153.66 1109 1085 223.0
A 13 254 16989 71.31 1109 1085 223.0
A 3 137 11352 46.03 1109 1085 223.0
B 6 159 2669399 12682.87 1089 1060 210.4
B 6 36 82402 386.63 1089 1060 210.4
B 4 171 65814 307.78 1089 1060 210.4
C 14 238 176353 706.23 1058 1064 248.2
C 0 10 155162 620.86 1058 1064 248.2
C 8 229 135158 540.26 1058 1064 248.2
D 1 52 396430 1546.12 1077 1051 255.7
D 8 195 147810 573.9 1077 1051 255.7
D 2 250 93116 360.02 1077 1051 255.7

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