ASTROSAT CZTI

Data Quality Report

Orbit 35338

Creation date: 2022-04-11T20:20:21.286717
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/AS1A11_093T01_9000005064_35338cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35338cztM0_level2_quad_clean.evt
Size (bytes)547,369,92064,399,680
Size522.0 MB 61.4 MB
Events in quadrant A2,780,150397,612
Events in quadrant B6,114,097365,303
Events in quadrant C3,172,833402,922
Events in quadrant D4,125,446386,821

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118813
B0220162
C0127352
D0161512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5675240.422907%
B5675106618.784141%
C56751001.762115%
D56752193.859031%

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 7256 5674 18 18 0.25% 0.32%
B 7256 5675 789 789 10.87% 13.90%
C 7256 5674 93 93 1.28% 1.64%
D 7257 5676 193 193 2.66% 3.40%

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 10 83 105410 799.76 649 635 131.0
A 14 254 41750 313.84 649 635 131.0
A 8 192 36800 276.05 649 635 131.0
B 5 236 2325388 20415.31 600 585 113.9
B 5 172 1297758 11391.15 600 585 113.9
B 4 232 92322 805.59 600 585 113.9
C 0 10 368543 2508.79 629 633 146.6
C 15 214 234876 1597.31 629 633 146.6
C 1 23 89116 603.37 629 633 146.6
D 8 195 856587 5605.21 624 604 152.7
D 10 118 255020 1665.98 624 604 152.7
D 12 233 239124 1561.89 624 604 152.7

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