ASTROSAT CZTI

Data Quality Report

Orbit 54195

Creation date: 2025-10-04T16:21:54.714451
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_004T08_9000006514_54195cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54195cztM0_level2_quad_clean.evt
Size (bytes)501,295,68085,763,520
Size478.1 MB 81.8 MB
Events in quadrant A3,134,102593,397
Events in quadrant B3,342,913646,276
Events in quadrant C2,888,790554,777
Events in quadrant D8,718,501378,662

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134581
B0139271
C0132521
D0301721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6073971.597234%
B6074961.580507%
C6074771.267698%
D6074192631.708923%

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 7163 6073 47 47 0.66% 0.77%
B 7164 6075 31 31 0.43% 0.51%
C 7164 6075 49 49 0.68% 0.81%
D 7164 6075 1955 1955 27.29% 32.18%

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 15 174 306238 1913.89 647 630 159.7
A 11 3 92912 577.92 647 630 159.7
A 4 3 53544 331.38 647 630 159.7
B 15 20 273056 2022.68 638 619 134.7
B 4 171 195120 1444.06 638 619 134.7
B 0 213 73742 542.9 638 619 134.7
C 15 215 270145 1593.01 615 609 169.2
C 14 254 53851 314.67 615 609 169.2
C 15 216 48398 282.44 615 609 169.2
D 8 176 6234369 42840.51 512 488 145.5
D 2 172 194253 1331.59 512 488 145.5
D 3 12 122744 840.17 512 488 145.5

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