ASTROSAT CZTI

Data Quality Report

Orbit 04873

Creation date: 2024-06-27T14:48:15.262515
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/AS1G05_009T02_9000000618_04873cztM0_level2.evt modeM0/AS1G05_009T02_9000000618_04873cztM0_level2_quad_clean.evt
Size (bytes)1,633,602,240238,956,480
Size1.5 GB 227.9 MB
Events in quadrant A10,813,8341,429,927
Events in quadrant B13,085,3621,423,172
Events in quadrant C10,410,2691,429,314
Events in quadrant D13,581,6781,343,819

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049820
B049816
C049814
D049832

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0508251902
B0570712259
C0500221773
D0602963113

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A234143841.640044%
B233928473.620896%
C234653201.363733%
D2329210114.340546%

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 25693 24123 52 52 0.20% 0.22%
B 25693 24083 242 242 0.94% 1.00%
C 25693 24128 10 10 0.04% 0.04%
D 25693 24023 528 528 2.06% 2.20%

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 13 251 347437 623.4 2687 2628 553.1
A 8 15 67462 117.22 2687 2628 553.1
A 0 50 39023 65.8 2687 2628 553.1
B 10 16 1940524 3737.99 2695 2632 518.4
B 15 204 255586 487.92 2695 2632 518.4
B 4 80 187342 356.29 2695 2632 518.4
C 1 16 47739 73.25 2641 2646 615.6
C 9 247 42741 65.13 2641 2646 615.6
C 13 61 21523 30.66 2641 2646 615.6
D 13 235 1122824 1764.32 2588 2505 635.0
D 2 136 720797 1131.19 2588 2505 635.0
D 1 31 514965 807.04 2588 2505 635.0

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