ASTROSAT CZTI

Data Quality Report

Orbit 55116

Creation date: 2025-12-05T18:20:51.471292
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_022T16_9000006532_55116cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55116cztM0_level2_quad_clean.evt
Size (bytes)1,310,362,560349,208,640
Size1.2 GB 333.0 MB
Events in quadrant A11,417,0872,260,981
Events in quadrant B10,587,8432,455,482
Events in quadrant C11,858,5692,157,902
Events in quadrant D12,758,2252,027,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04920
B04920
C04920
D04920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0526604
B0501934
C0537794
D0561084

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A242955942.444948%
B242953541.457090%
C242943821.572405%
D242944701.934634%

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 26490 24300 199 199 0.75% 0.82%
B 26490 24300 16 16 0.06% 0.07%
C 26489 24299 175 175 0.66% 0.72%
D 26489 24299 263 263 0.99% 1.08%

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 1058688 1660.58 2587 2519 636.0
A 5 241 95736 146.56 2587 2519 636.0
A 3 14 62437 94.21 2587 2519 636.0
B 10 247 139822 249.37 2562 2459 550.8
B 0 63 132968 236.92 2562 2459 550.8
B 0 182 107524 190.73 2562 2459 550.8
C 6 223 576457 843.06 2503 2481 680.8
C 10 22 299940 436.91 2503 2481 680.8
C 3 242 188814 273.69 2503 2481 680.8
D 15 94 633485 895.41 2503 2394 704.8
D 3 144 532395 751.98 2503 2394 704.8
D 3 176 339314 478.03 2503 2394 704.8

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