ASTROSAT CZTI

Data Quality Report

Orbit 49693

Creation date: 2024-12-09T22:56:41.493196
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/AS1T05_233T01_9000006438_49693cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49693cztM0_level2_quad_clean.evt
Size (bytes)1,189,448,64043,689,600
Size1.1 GB 41.7 MB
Events in quadrant A15,144,656130,568
Events in quadrant B4,152,446679,252
Events in quadrant C8,308,2363,133
Events in quadrant D15,926,45461,283

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0493381
B0166651
C0291902
D0517801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6425547585.214008%
B64252373.688716%
C6425640999.750973%
D6425595792.715953%

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 7515 6425 5466 5466 72.73% 85.07%
B 7515 6426 113 113 1.50% 1.76%
C 7514 6424 608 608 8.09% 9.46%
D 7514 6424 5746 5746 76.47% 89.45%

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 6817219 47688.32 492 475 142.9
A 12 50 1592604 11138.16 492 475 142.9
A 4 253 855534 5981.79 492 475 142.9
B 4 206 314806 2087.32 707 685 150.5
B 10 44 225998 1497.2 707 685 150.5
B 3 233 194398 1287.21 707 685 150.5
C 15 180 2318327 87204.47 54 51 26.6
C 15 190 2209081 83095.06 54 51 26.6
C 15 196 759464 28566.15 54 51 26.6
D 15 40 4268323 38483.36 326 312 110.9
D 15 168 2444633 22039.7 326 312 110.9
D 15 106 1312183 11828.74 326 312 110.9

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