ASTROSAT CZTI

Data Quality Report

Orbit 34264

Creation date: 2024-06-27T20:58:16.557887
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_059T09_9000004888_34264cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34264cztM0_level2_quad_clean.evt
Size (bytes)458,176,32096,036,480
Size437.0 MB 91.6 MB
Events in quadrant A2,391,223651,536
Events in quadrant B3,439,176651,036
Events in quadrant C3,738,760652,493
Events in quadrant D3,974,839610,053

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101660
B0134300
C0142510
D0151260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4893110.224811%
B48933527.193951%
C48931573.208665%
D48932354.802779%

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 7045 4894 4 4 0.06% 0.08%
B 7045 4894 254 254 3.61% 5.19%
C 7045 4894 169 169 2.40% 3.45%
D 7045 4894 188 188 2.67% 3.84%

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 15 169 52951 442.67 592 582 118.3
A 10 83 24513 202.29 592 582 118.3
A 9 143 15844 129.01 592 582 118.3
B 5 172 945361 8693.43 575 561 108.7
B 0 182 113061 1035.15 575 561 108.7
B 4 232 31459 284.3 575 561 108.7
C 0 239 925097 6898.1 582 587 134.0
C 15 214 214457 1595.76 582 587 134.0
C 14 254 174156 1295.06 582 587 134.0
D 8 195 859015 5644.5 562 551 152.1
D 10 199 300513 1972.28 562 551 152.1
D 14 52 210245 1378.76 562 551 152.1

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