ASTROSAT CZTI

Data Quality Report

Orbit 42865

Creation date: 2024-06-27T22:45:08.767946
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_138T01_9000005828_42865cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42865cztM0_level2_quad_clean.evt
Size (bytes)1,606,636,800414,895,680
Size1.5 GB 395.7 MB
Events in quadrant A14,728,0912,762,828
Events in quadrant B11,798,0192,849,884
Events in quadrant C13,279,6462,801,513
Events in quadrant D17,756,3112,448,985

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0585576
B0520836
C0549616
D0694938

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05040
B05040
C05040
D05040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A247023401.376407%
B247021540.623431%
C247022991.210428%
D2470114665.934982%

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 35245 24708 251 251 0.71% 1.02%
B 35245 24708 100 100 0.28% 0.40%
C 35245 24708 282 282 0.80% 1.14%
D 35245 24708 1450 1450 4.11% 5.87%

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 2490716 4515.99 2706 2654 550.9
A 15 237 698312 1262.66 2706 2654 550.9
A 13 248 503449 908.98 2706 2654 550.9
B 5 172 343902 660.12 2710 2634 517.0
B 5 255 308799 592.22 2710 2634 517.0
B 4 67 144562 274.53 2710 2634 517.0
C 15 214 983649 1596.73 2653 2671 614.4
C 14 254 609241 987.31 2653 2671 614.4
C 7 220 267038 430.31 2653 2671 614.4
D 10 118 2161644 3433.34 2584 2521 628.9
D 12 6 1712495 2719.13 2584 2521 628.9
D 2 249 1499609 2380.6 2584 2521 628.9

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