ASTROSAT CZTI

Data Quality Report

Orbit 54497

Creation date: 2025-10-25T11:56:51.515150
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/AS1A14_127T09_9000006520_54497cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54497cztM0_level2_quad_clean.evt
Size (bytes)476,798,40092,813,760
Size454.7 MB 88.5 MB
Events in quadrant A3,209,463620,310
Events in quadrant B4,439,822646,328
Events in quadrant C5,540,605552,666
Events in quadrant D3,949,838533,289

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141901
B0178671
C0208711
D0165011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6561901.371742%
B65622914.434624%
C65625538.427309%
D65613585.456485%

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 7456 6562 37 37 0.50% 0.56%
B 7457 6563 122 122 1.64% 1.86%
C 7457 6563 453 453 6.07% 6.90%
D 7456 6562 300 300 4.02% 4.57%

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 0 8 106025 593.91 717 698 177.3
A 4 3 80932 452.41 717 698 177.3
A 8 246 42823 237.53 717 698 177.3
B 5 185 468744 3076.68 704 680 152.1
B 5 172 429745 2820.33 704 680 152.1
B 0 151 313540 2056.49 704 680 152.1
C 7 64 1905050 10218.99 679 675 186.4
C 13 3 440375 2359.46 679 675 186.4
C 1 29 188897 1010.01 679 675 186.4
D 9 19 506883 2639.39 678 648 191.8
D 8 176 238933 1242.36 678 648 191.8
D 3 12 200904 1044.09 678 648 191.8

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