ASTROSAT CZTI

Data Quality Report

Orbit 55059

Creation date: 2025-12-02T00:30:56.293482
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_025T01_9000006530_55059cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55059cztM0_level2_quad_clean.evt
Size (bytes)398,283,84083,468,160
Size379.8 MB 79.6 MB
Events in quadrant A2,736,170551,148
Events in quadrant B3,516,936590,138
Events in quadrant C3,080,289522,693
Events in quadrant D4,954,360454,351

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013428871
B0160891612
C0147241243
D0199121197

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012812
B01279
C012711
D012810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5871410.698348%
B5828550.943720%
C5866560.954654%
D58445138.778234%

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 7751 5954 34 34 0.44% 0.57%
B 7736 5894 38 38 0.49% 0.64%
C 7793 5944 57 57 0.73% 0.96%
D 7758 5926 476 476 6.14% 8.03%

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 0 8 163125 1032.6 639 623 157.4
A 0 250 39459 246.78 639 623 157.4
A 7 190 15317 93.37 639 623 157.4
B 4 81 738088 5401.67 625 602 136.5
B 5 185 266391 1946.75 625 602 136.5
B 12 111 16930 119.59 625 602 136.5
C 12 250 141381 828.02 619 614 170.0
C 1 16 96583 564.51 619 614 170.0
C 13 3 91493 534.57 619 614 170.0
D 15 94 1365585 8121.39 593 568 168.1
D 11 129 457961 2721.34 593 568 168.1
D 6 239 206383 1224.53 593 568 168.1

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