ASTROSAT CZTI

Data Quality Report

Orbit 50352

Creation date: 2025-01-19T00:15:22.041988
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_50352cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50352cztM0_level2_quad_clean.evt
Size (bytes)1,043,634,24075,329,280
Size995.3 MB 71.8 MB
Events in quadrant A5,727,764640,781
Events in quadrant B5,303,123684,144
Events in quadrant C11,575,792430,946
Events in quadrant D15,477,10931,111

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217540
B0206070
C0392980
D0508084

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70873905.503034%
B70874676.589530%
C7087272238.408353%
D7086678895.794524%

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 7087 7087 359 359 5.07% 5.07%
B 7087 7087 260 260 3.67% 3.67%
C 7087 7087 2492 2492 35.16% 35.16%
D 7085 7081 4709 4709 66.46% 66.50%

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 3 231 716467 3887.69 748 730 184.1
A 10 253 508968 2760.61 748 730 184.1
A 4 3 360270 1952.92 748 730 184.1
B 4 170 1086320 6905.53 739 717 157.2
B 5 172 280194 1777.75 739 717 157.2
B 0 200 188832 1196.6 739 717 157.2
C 15 230 3040438 17005.75 648 645 178.8
C 15 232 2591577 14494.65 648 645 178.8
C 15 196 596041 3330.87 648 645 178.8
D 7 61 10605673 144160.22 251 241 73.6
D 3 12 1979298 26901.43 251 241 73.6
D 15 108 264355 3590.12 251 241 73.6

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