ASTROSAT CZTI

Data Quality Report

Orbit 54693

Creation date: 2025-11-13T14:11:40.329099
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_54693cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54693cztM0_level2_quad_clean.evt
Size (bytes)612,849,60094,173,120
Size584.5 MB 89.8 MB
Events in quadrant A4,442,001650,754
Events in quadrant B3,900,695694,808
Events in quadrant C3,856,461613,485
Events in quadrant D9,953,505414,182

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179382
B0165694
C0165412
D0343712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68672343.407602%
B68662143.116807%
C68662233.247888%
D6866235034.226624%

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 7642 6868 57 57 0.75% 0.83%
B 7641 6867 105 105 1.37% 1.53%
C 7641 6867 188 188 2.46% 2.74%
D 7641 6867 2175 2175 28.46% 31.67%

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 7 190 1034878 5654.81 735 716 182.9
A 3 14 285056 1554.78 735 716 182.9
A 11 3 111132 603.76 735 716 182.9
B 2 249 570321 3651.35 731 705 156.0
B 7 0 196979 1258.15 731 705 156.0
B 10 247 67330 427.08 731 705 156.0
C 4 5 448806 2274.01 715 707 197.1
C 13 3 184055 930.45 715 707 197.1
C 6 223 116009 585.13 715 707 197.1
D 11 129 5924269 34450.24 594 567 171.9
D 11 176 625365 3633.61 594 567 171.9
D 2 172 254360 1475.97 594 567 171.9

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