ASTROSAT CZTI

Data Quality Report

Orbit 57929

Creation date: 2026-06-12T22:11:37.375216
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_125T11_9000006582_57929cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57929cztM0_level2_quad_clean.evt
Size (bytes)450,558,72090,711,360
Size429.7 MB 86.5 MB
Events in quadrant A2,710,313612,648
Events in quadrant B4,086,636630,384
Events in quadrant C4,205,691531,574
Events in quadrant D5,193,432539,244

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126931
B0164501
C0168901
D0197491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6201170.274149%
B62023014.853273%
C62025478.819736%
D62021802.902290%

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 7300 6201 2 2 0.03% 0.03%
B 7301 6202 223 223 3.05% 3.60%
C 7301 6202 311 311 4.26% 5.01%
D 7301 6202 321 321 4.40% 5.18%

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 3 14 42677 254.68 668 652 165.0
A 3 31 23615 139.16 668 652 165.0
A 0 117 15684 91.1 668 652 165.0
B 3 238 1264439 9136.42 647 623 138.3
B 6 51 42318 301.42 647 623 138.3
B 0 63 41742 297.26 647 623 138.3
C 15 224 1614134 9691.7 602 594 166.5
C 14 254 57689 342.94 602 594 166.5
C 2 0 57086 339.32 602 594 166.5
D 2 62 1988415 10906.96 636 606 182.3
D 8 240 172520 943.28 636 606 182.3
D 8 160 137143 749.17 636 606 182.3

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