ASTROSAT CZTI

Data Quality Report

Orbit 41856

Creation date: 2024-06-27T22:33:41.436479
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/AS1C07_001T11_9000005710_41856cztM0_level2.fits modeM0/AS1C07_001T11_9000005710_41856cztM0_level2_quad_clean.evt
Size (bytes)389,329,92091,684,800
Size371.3 MB 87.4 MB
Events in quadrant A3,257,697622,842
Events in quadrant B2,788,122631,266
Events in quadrant C3,109,204603,075
Events in quadrant D4,811,078518,055

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132921
B0123721
C0126101
D0184222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5727510.890519%
B5727320.558757%
C57271352.357255%
D572665811.491443%

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 7068 5728 30 30 0.42% 0.52%
B 7068 5728 16 16 0.23% 0.28%
C 7068 5728 128 128 1.81% 2.23%
D 7067 5727 592 592 8.38% 10.34%

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 551191 4376.76 608 593 125.8
A 14 24 340528 2702.18 608 593 125.8
A 2 79 8518 62.99 608 593 125.8
B 0 156 80902 690.77 604 589 116.3
B 5 32 69092 589.19 604 589 116.3
B 0 245 60542 515.65 604 589 116.3
C 0 10 577572 4172.66 589 592 138.3
C 15 214 226957 1637.05 589 592 138.3
C 13 61 4073 25.17 589 592 138.3
D 13 249 1615857 11560.07 571 555 139.7
D 2 249 657440 4701.06 571 555 139.7
D 5 222 99503 708.13 571 555 139.7

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