ASTROSAT CZTI

Data Quality Report

Orbit 55284

Creation date: 2025-12-16T23:32:05.723506
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_009T01_9000006534_55284cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55284cztM0_level2_quad_clean.evt
Size (bytes)396,138,24097,957,440
Size377.8 MB 93.4 MB
Events in quadrant A2,970,315641,286
Events in quadrant B2,957,563685,902
Events in quadrant C3,725,147608,475
Events in quadrant D4,491,653565,941

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137102
B0139162
C0161052
D0178932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6667550.824959%
B6667781.169942%
C66671532.294885%
D66673034.544773%

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 7722 6668 0 0 0.00% 0.00%
B 7722 6668 4 4 0.05% 0.06%
C 7722 6668 94 94 1.22% 1.41%
D 7722 6668 258 258 3.34% 3.87%

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 7 243 94681 531.53 714 694 176.8
A 4 3 40472 224.96 714 694 176.8
A 7 7 31836 176.12 714 694 176.8
B 0 199 70348 461.14 702 676 151.1
B 0 182 37345 242.7 702 676 151.1
B 10 247 24740 159.27 702 676 151.1
C 13 3 429141 2261.27 690 682 189.5
C 3 248 366702 1931.74 690 682 189.5
C 10 22 82207 430.26 690 682 189.5
D 11 176 654604 3408.06 688 658 191.9
D 11 129 358926 1867.12 688 658 191.9
D 6 42 328697 1709.58 688 658 191.9

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