ASTROSAT CZTI

Data Quality Report

Orbit 56933

Creation date: 2026-04-07T11:35:53.473100
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_56933cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56933cztM0_level2_quad_clean.evt
Size (bytes)834,500,16080,691,840
Size795.8 MB 77.0 MB
Events in quadrant A4,817,417618,940
Events in quadrant B6,011,923645,343
Events in quadrant C4,071,233581,507
Events in quadrant D15,465,183124,879

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01382
C01382
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019195302
B023301729
C017628313
D0515571021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67852373.492999%
B67685067.476359%
C67852543.743552%
D6747552681.903068%

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 6866 6816 210 210 3.06% 3.08%
B 6855 6795 401 401 5.85% 5.90%
C 6874 6819 224 224 3.26% 3.28%
D 6847 6755 5374 5374 78.49% 79.56%

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 64 1435077 8179.77 693 673 175.4
A 3 79 211784 1203.87 693 673 175.4
A 10 251 192939 1096.41 693 673 175.4
B 5 185 2857308 19910.61 678 655 143.5
B 5 172 226242 1572.32 678 655 143.5
B 0 245 52071 358.36 678 655 143.5
C 13 3 1109834 6030.68 668 663 183.9
C 0 129 117766 636.7 668 663 183.9
C 14 254 67561 363.73 668 663 183.9
D 12 33 12262441 98188.07 430 410 124.9
D 2 249 769603 6159.3 430 410 124.9
D 8 240 328514 2627.29 430 410 124.9

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