ASTROSAT CZTI

Data Quality Report

Orbit 41822

Creation date: 2024-06-27T22:33:12.574278
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_093T02_9000005704_41822cztM0_level2.fits modeM0/AS1A12_093T02_9000005704_41822cztM0_level2_quad_clean.evt
Size (bytes)335,116,80090,967,680
Size319.6 MB 86.8 MB
Events in quadrant A3,238,027633,746
Events in quadrant B2,438,139649,985
Events in quadrant C3,359,907564,860
Events in quadrant D2,983,994559,291

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128952
B0101402
C0127702
D0119022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4943420.849686%
B494250.101174%
C49423006.070417%
D4942541.092675%

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 7036 4944 33 33 0.47% 0.67%
B 7035 4943 0 0 0.00% 0.00%
C 7035 4943 281 281 3.99% 5.68%
D 7035 4943 60 60 0.85% 1.21%

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 545712 4419.69 606 595 123.3
A 14 24 175920 1421.5 606 595 123.3
A 12 189 128649 1038.23 606 595 123.3
B 0 245 23801 202.69 598 585 114.5
B 0 183 18542 156.77 598 585 114.5
B 4 141 14974 125.62 598 585 114.5
C 0 10 909409 7069.73 550 555 128.6
C 15 214 198350 1538.59 550 555 128.6
C 14 254 102910 796.19 550 555 128.6
D 5 222 372475 2610.37 585 570 142.5
D 13 249 132335 924.85 585 570 142.5
D 12 79 100876 704.04 585 570 142.5

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