ASTROSAT CZTI

Data Quality Report

Orbit 57045

Creation date: 2026-04-14T11:22:07.865084
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_083T14_9000006564_57045cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_57045cztM0_level2_quad_clean.evt
Size (bytes)597,833,28093,415,680
Size570.1 MB 89.1 MB
Events in quadrant A4,883,602630,270
Events in quadrant B3,980,963700,040
Events in quadrant C6,802,805485,618
Events in quadrant D5,949,558552,430

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191512
B0159183
C0245622
D0222052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66035638.526427%
B66023665.543775%
C6602176126.673735%
D66026439.739473%

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 7798 6604 416 416 5.33% 6.30%
B 7797 6603 147 147 1.89% 2.23%
C 7797 6603 1616 1616 20.73% 24.47%
D 7797 6603 428 428 5.49% 6.48%

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 4 249 1966024 11149.5 719 702 176.3
A 7 64 39868 222.19 719 702 176.3
A 4 3 16781 91.22 719 702 176.3
B 5 185 346281 2294.87 714 689 150.6
B 0 63 337237 2234.81 714 689 150.6
B 10 16 280638 1858.97 714 689 150.6
C 15 198 4091959 25191.13 597 591 162.4
C 1 16 198019 1215.59 597 591 162.4
C 9 38 47729 290.24 597 591 162.4
D 15 142 1629999 8432.46 686 655 193.2
D 12 33 1037288 5364.96 686 655 193.2
D 7 96 202719 1045.76 686 655 193.2

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