ASTROSAT CZTI

Data Quality Report

Orbit 56233

Creation date: 2026-02-19T10:42:19.937612
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_083T04_9000006550_56233cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56233cztM0_level2_quad_clean.evt
Size (bytes)1,464,387,840136,837,440
Size1.4 GB 130.5 MB
Events in quadrant A23,237,745466,337
Events in quadrant B9,007,3191,099,993
Events in quadrant C6,804,7301,001,902
Events in quadrant D14,277,401785,515

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0768782
B0347762
C0286663
D0502812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11406709862.230405%
B1140610499.196914%
C114065504.822023%
D11406262122.979134%

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 13356 11409 6711 6711 50.25% 58.82%
B 13356 11409 575 575 4.31% 5.04%
C 13356 11409 375 375 2.81% 3.29%
D 13356 11409 2613 2613 19.56% 22.90%

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 32 9591040 43508.14 886 865 220.4
A 8 176 4390911 19916.5 886 865 220.4
A 12 115 3817956 17317.15 886 865 220.4
B 5 185 1278199 5154.47 1166 1124 247.8
B 4 171 1215348 4900.79 1166 1124 247.8
B 0 63 439791 1770.53 1166 1124 247.8
C 5 250 850009 2698.16 1148 1136 314.6
C 6 223 457875 1451.75 1148 1136 314.6
C 12 254 399012 1264.66 1148 1136 314.6
D 8 129 7636737 25351.09 1067 1018 301.2
D 2 249 625691 2073.96 1067 1018 301.2
D 6 239 601009 1992.01 1067 1018 301.2

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