ASTROSAT CZTI

Data Quality Report

Orbit 00570

Creation date: 2024-06-27T13:59:51.117728
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/AS1P01_014T01_9000000080_00570cztM0_level2.evt modeM0/AS1P01_014T01_9000000080_00570cztM0_level2_quad_clean.evt
Size (bytes)761,420,16066,795,840
Size726.1 MB 63.7 MB
Events in quadrant A5,650,918430,916
Events in quadrant B5,590,049429,097
Events in quadrant C5,028,276428,888
Events in quadrant D6,483,766409,617

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200372
B0198861
C0182231
D0225251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A460540.086862%
B4605150.325733%
C460510.021716%
D46051282.779587%

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 6760 4606 145 145 2.14% 3.15%
B 6760 4606 108 108 1.60% 2.34%
C 6760 4606 38 38 0.56% 0.83%
D 6760 4606 577 577 8.54% 12.53%

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 0 149 338588 1139.89 1347 1332 295.9
A 0 238 60521 200.05 1347 1332 295.9
A 0 69 13076 39.69 1347 1332 295.9
B 4 250 169762 530.18 1351 1355 317.6
B 8 4 58247 179.11 1351 1355 317.6
B 4 206 48872 149.59 1351 1355 317.6
C 0 64 12218 30.55 1269 1320 356.8
C 5 249 8914 21.28 1269 1320 356.8
C 15 241 8639 20.51 1269 1320 356.8
D 13 216 931725 2471.58 1198 1241 376.5
D 1 4 378365 1001.73 1198 1241 376.5
D 13 221 129743 341.33 1198 1241 376.5

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