ASTROSAT CZTI

Data Quality Report

Orbit 50200

Creation date: 2025-01-08T16:19:58.443367
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_003T01_9000006442_50200cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50200cztM0_level2_quad_clean.evt
Size (bytes)878,428,80066,954,240
Size837.7 MB 63.9 MB
Events in quadrant A5,443,372526,330
Events in quadrant B4,256,926586,859
Events in quadrant C12,786,843109,116
Events in quadrant D9,562,727382,934

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202411
B0168331
C0420831
D0325811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60355839.660315%
B60353585.932063%
C6035498382.568351%
D6035179229.693455%

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 7005 6035 379 379 5.41% 6.28%
B 7005 6035 167 167 2.38% 2.77%
C 7005 6035 3901 3901 55.69% 64.64%
D 7005 6035 1860 1860 26.55% 30.82%

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 11 7 524608 3400.37 613 597 154.1
A 0 98 388664 2518.21 613 597 154.1
A 4 156 336904 2182.33 613 597 154.1
B 4 206 1223468 9332.65 615 595 131.0
B 0 155 124271 943.86 615 595 131.0
B 5 172 49371 372.25 615 595 131.0
C 4 111 8306209 107082.35 249 245 77.6
C 15 213 1753233 22599.91 249 245 77.6
C 15 197 499040 6430.58 249 245 77.6
D 15 185 1963858 12185.14 548 527 161.1
D 15 108 1383164 8581.14 548 527 161.1
D 7 61 1274116 7904.35 548 527 161.1

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