ASTROSAT CZTI

Data Quality Report

Orbit 55955

Creation date: 2026-02-05T21:00:59.381235
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_066T02_9000006546_55955cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55955cztM0_level2_quad_clean.evt
Size (bytes)470,787,84092,738,880
Size449.0 MB 88.4 MB
Events in quadrant A4,497,715595,444
Events in quadrant B3,698,744670,265
Events in quadrant C3,747,235562,453
Events in quadrant D4,981,800529,531

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181772
B0154772
C0161363
D0193492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64533815.904231%
B6454941.456461%
C64533896.028204%
D64534737.329924%

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 7653 6454 385 385 5.03% 5.97%
B 7654 6455 71 71 0.93% 1.10%
C 7652 6453 318 318 4.16% 4.93%
D 7652 6453 442 442 5.78% 6.85%

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 12 115 1301812 7860.78 668 652 165.5
A 7 64 364737 2199.57 668 652 165.5
A 3 14 107279 644.17 668 652 165.5
B 0 231 303605 2081.82 679 656 145.5
B 0 171 212113 1453.1 679 656 145.5
B 9 251 152044 1040.31 679 656 145.5
C 13 3 1005056 5614.68 650 643 178.9
C 1 29 93546 519.33 650 643 178.9
C 15 248 24431 132.97 650 643 178.9
D 11 129 1983369 10735.97 645 618 184.7
D 2 62 119877 645.75 645 618 184.7
D 3 12 58494 313.38 645 618 184.7

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