ASTROSAT CZTI

Data Quality Report

Orbit 39225

Creation date: 2024-06-27T22:01:59.456180
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/AS1A12_054T04_9000005446_39225cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39225cztM0_level2_quad_clean.evt
Size (bytes)561,162,24083,329,920
Size535.2 MB 79.5 MB
Events in quadrant A3,014,617641,522
Events in quadrant B2,461,643652,162
Events in quadrant C2,650,631617,639
Events in quadrant D12,214,754223,949

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125393
B0112722
C0116232
D0400752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5536540.975434%
B553680.144509%
C553660.108382%
D5536374067.557803%

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 7269 5537 36 36 0.50% 0.65%
B 7269 5537 1 1 0.01% 0.02%
C 7269 5537 0 0 0.00% 0.00%
D 7269 5535 3315 3315 45.60% 59.89%

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 429930 3480.12 607 595 123.4
A 13 248 235725 1905.92 607 595 123.4
A 13 254 8576 64.69 607 595 123.4
B 5 172 30427 254.83 603 586 117.1
B 5 184 28975 242.43 603 586 117.1
B 0 190 20802 172.64 603 586 117.1
C 15 214 230817 1692.32 585 588 136.0
C 0 239 127157 930.36 585 588 136.0
C 0 10 9598 66.23 585 588 136.0
D 12 235 10078421 104683.05 392 380 96.3
D 5 222 331863 3443.19 392 380 96.3
D 2 249 155188 1608.03 392 380 96.3

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