ASTROSAT CZTI

Data Quality Report

Orbit 55138

Creation date: 2025-12-07T03:26:47.922989
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_022T16_9000006532_55138cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55138cztM0_level2_quad_clean.evt
Size (bytes)514,543,68084,695,040
Size490.7 MB 80.8 MB
Events in quadrant A3,664,904571,679
Events in quadrant B3,502,716599,408
Events in quadrant C3,047,660560,432
Events in quadrant D8,344,418395,970

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154391
B0151432
C0138825
D0292391

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62662544.053623%
B62653625.778132%
C6263590.942041%
D6266175427.992340%

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 7276 6267 204 204 2.80% 3.26%
B 7276 6267 304 304 4.18% 4.85%
C 7276 6266 35 35 0.48% 0.56%
D 7276 6267 1747 1747 24.01% 27.88%

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 406187 2543.21 642 626 159.5
A 12 115 390375 2444.05 642 626 159.5
A 15 32 312569 1956.14 642 626 159.5
B 2 249 764398 5619.49 625 601 135.9
B 10 247 87618 640.21 625 601 135.9
B 0 182 58993 429.61 625 601 135.9
C 6 223 118928 676.77 634 628 174.8
C 14 254 100805 573.09 634 628 174.8
C 13 3 93478 531.18 634 628 174.8
D 11 129 5440042 34615.29 548 524 157.1
D 8 245 295251 1875.55 548 524 157.1
D 3 12 174069 1104.38 548 524 157.1

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