ASTROSAT CZTI

Data Quality Report

Orbit 54676

Creation date: 2025-11-06T01:54:35.689104
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_066T07_9000006522_54676cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54676cztM0_level2_quad_clean.evt
Size (bytes)510,168,96093,571,200
Size486.5 MB 89.2 MB
Events in quadrant A3,416,384640,744
Events in quadrant B3,367,580692,250
Events in quadrant C4,141,711601,303
Events in quadrant D7,470,886460,556

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144963
B0143252
C0164252
D0265272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62821782.833493%
B62821181.878383%
C62822754.377587%
D6282155724.785100%

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 7462 6282 94 94 1.26% 1.50%
B 7462 6282 29 29 0.39% 0.46%
C 7462 6282 205 205 2.75% 3.26%
D 7462 6282 1425 1425 19.10% 22.68%

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 11 3 239275 1326.9 725 705 179.8
A 12 15 125206 692.46 725 705 179.8
A 5 240 86026 474.54 725 705 179.8
B 0 213 205153 1334.31 718 695 153.2
B 10 247 137368 891.94 718 695 153.2
B 2 249 118214 766.94 718 695 153.2
C 4 5 576184 2985.69 702 699 192.7
C 12 250 250496 1295.98 702 699 192.7
C 13 3 160455 828.83 702 699 192.7
D 11 129 3852879 21540.42 629 603 178.8
D 2 62 370238 2066.85 629 603 178.8
D 2 172 339831 1896.83 629 603 178.8

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