ASTROSAT CZTI

Data Quality Report

Orbit 54708

Creation date: 2025-11-10T15:41:22.530928
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_103T01_9000006524_54708cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54708cztM0_level2_quad_clean.evt
Size (bytes)437,313,600101,905,920
Size417.1 MB 97.2 MB
Events in quadrant A3,369,990670,299
Events in quadrant B4,835,519686,422
Events in quadrant C3,475,784637,855
Events in quadrant D3,949,974592,761

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153922
B0195332
C0158202
D0172502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7154751.048365%
B71544836.751468%
C7154721.006430%
D71541782.488119%

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 7694 7155 21 21 0.27% 0.29%
B 7694 7155 305 305 3.96% 4.26%
C 7694 7155 35 35 0.45% 0.49%
D 7694 7155 129 129 1.68% 1.80%

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 132077 705.07 744 726 186.3
A 11 3 109170 582.11 744 726 186.3
A 3 14 95590 509.21 744 726 186.3
B 2 249 1309023 8380.9 725 698 156.1
B 4 171 337318 2156.33 725 698 156.1
B 8 234 84343 535.82 725 698 156.1
C 3 242 175233 879.34 724 719 198.5
C 14 254 154071 772.7 724 719 198.5
C 13 3 71048 354.37 724 719 198.5
D 3 12 356279 1710.12 715 682 207.9
D 11 129 268442 1287.7 715 682 207.9
D 15 43 123502 590.66 715 682 207.9

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