ASTROSAT CZTI

Data Quality Report

Orbit 50784

Creation date: 2025-02-17T00:31:46.694645
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_001T01_9000006450_50784cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50784cztM0_level2_quad_clean.evt
Size (bytes)578,511,36084,888,000
Size551.7 MB 81.0 MB
Events in quadrant A3,636,635574,627
Events in quadrant B3,393,500626,723
Events in quadrant C5,588,980509,498
Events in quadrant D8,336,617445,566

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148001
B0140581
C0207222
D0288131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59242163.646185%
B59242143.612424%
C592467111.326806%
D5924121220.459149%

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 7044 5925 106 106 1.50% 1.79%
B 7044 5925 79 79 1.12% 1.33%
C 7044 5925 521 521 7.40% 8.79%
D 7044 5924 1275 1275 18.10% 21.52%

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 4 249 208430 1299.0 639 622 160.0
A 8 248 173178 1078.64 639 622 160.0
A 5 17 157020 977.64 639 622 160.0
B 4 170 209498 1544.55 639 617 135.2
B 10 247 154809 1140.16 639 617 135.2
B 4 206 146816 1081.05 639 617 135.2
C 5 10 2343232 14095.04 609 604 166.2
C 13 3 366011 2198.57 609 604 166.2
C 1 124 94260 563.51 609 604 166.2
D 8 176 3389009 20783.46 586 565 163.0
D 2 216 634723 3889.69 586 565 163.0
D 2 249 562994 3449.73 586 565 163.0

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