ASTROSAT CZTI

Data Quality Report

Orbit 53149

Creation date: 2025-07-26T06:27:39.846314
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/AS1C09_011T07_9000006488_53149cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53149cztM0_level2_quad_clean.evt
Size (bytes)525,185,28090,953,280
Size500.9 MB 86.7 MB
Events in quadrant A4,412,129588,320
Events in quadrant B3,200,305667,086
Events in quadrant C7,146,363492,546
Events in quadrant D4,189,443563,332

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176682
B0141892
C0256682
D0170962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63404597.239748%
B6340971.529968%
C6341128420.249172%
D63411552.444409%

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 8575 6342 402 402 4.69% 6.34%
B 8575 6342 37 37 0.43% 0.58%
C 8576 6343 1221 1221 14.24% 19.25%
D 8576 6343 101 101 1.18% 1.59%

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 12 115 1223266 7753.33 638 623 157.7
A 7 206 206628 1306.37 638 623 157.7
A 15 174 152936 965.88 638 623 157.7
B 4 81 235075 1699.67 659 638 137.9
B 2 249 115150 830.21 659 638 137.9
B 0 213 59373 425.83 659 638 137.9
C 1 241 2764429 16858.49 590 585 163.9
C 15 224 1174902 7162.92 590 585 163.9
C 0 240 339398 2066.64 590 585 163.9
D 15 125 497628 2686.29 643 613 185.0
D 2 153 277822 1498.27 643 613 185.0
D 9 49 158014 850.72 643 613 185.0

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