ASTROSAT CZTI

Data Quality Report

Orbit 42045

Creation date: 2024-06-27T22:36:10.149680
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_037T01_9000005736_42045cztM0_level2.fits modeM0/AS1A12_037T01_9000005736_42045cztM0_level2_quad_clean.evt
Size (bytes)516,775,68078,984,000
Size492.8 MB 75.3 MB
Events in quadrant A10,064,142296,012
Events in quadrant B2,509,740615,071
Events in quadrant C2,544,136585,286
Events in quadrant D3,579,663507,436

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337031
B0114221
C0111511
D0145846

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5541301954.484750%
B5541270.487277%
C554140.072189%
D55413656.587259%

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 6854 5541 2637 2637 38.47% 47.59%
B 6854 5542 15 15 0.22% 0.27%
C 6854 5542 1 1 0.01% 0.02%
D 6854 5542 314 314 4.58% 5.67%

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 15 223 7343648 76772.38 456 446 95.6
A 10 83 395090 4125.96 456 446 95.6
A 15 222 364281 3803.86 456 446 95.6
B 5 255 60904 513.11 600 583 117.6
B 15 35 32625 272.56 600 583 117.6
B 15 85 26434 219.9 600 583 117.6
C 15 214 229640 1651.65 589 591 138.7
C 12 249 14742 102.04 589 591 138.7
C 13 61 4121 25.45 589 591 138.7
D 12 233 697133 4949.99 572 556 140.7
D 1 52 300544 2131.77 572 556 140.7
D 5 32 144561 1023.32 572 556 140.7

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