ASTROSAT CZTI

Data Quality Report

Orbit 52892

Creation date: 2025-07-16T13:30:41.665116
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/AS1C09_011T08_9000006482_52892cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52892cztM0_level2_quad_clean.evt
Size (bytes)662,071,68092,655,360
Size631.4 MB 88.4 MB
Events in quadrant A4,190,202677,655
Events in quadrant B6,332,614593,078
Events in quadrant C4,261,440627,879
Events in quadrant D9,204,744440,095

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170781
B0233651
C0173231
D0319895

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66871852.766562%
B6688114917.180024%
C66881772.646531%
D6687216532.376252%

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 7462 6688 120 120 1.61% 1.79%
B 7463 6688 1006 1006 13.48% 15.04%
C 7463 6689 122 122 1.63% 1.82%
D 7461 6687 2051 2051 27.49% 30.67%

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 17 419823 2329.82 717 700 179.9
A 12 80 318345 1765.73 717 700 179.9
A 15 174 93430 515.47 717 700 179.9
B 10 254 2769857 19408.71 669 646 142.7
B 1 223 199228 1391.81 669 646 142.7
B 0 213 111691 778.29 669 646 142.7
C 3 233 354591 1845.68 689 678 191.8
C 7 80 278184 1447.21 689 678 191.8
C 15 224 220980 1148.89 689 678 191.8
D 15 125 2863921 16612.86 598 571 172.4
D 8 176 1863342 10807.6 598 571 172.4
D 9 49 861853 4997.07 598 571 172.4

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