ASTROSAT CZTI

Data Quality Report

Orbit 45171

Creation date: 2024-06-27T23:10:11.486135
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/AS1A13_049T05_9000006050_45171cztM0_level2.fits modeM0/AS1A13_049T05_9000006050_45171cztM0_level2_quad_clean.evt
Size (bytes)537,356,160105,160,320
Size512.5 MB 100.3 MB
Events in quadrant A6,499,790647,594
Events in quadrant B4,494,225747,284
Events in quadrant C2,999,263727,811
Events in quadrant D5,407,693620,497

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236331
B0177292
C0131561
D0202681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A632274411.768428%
B63221322.087947%
C6322701.107245%
D63225488.668143%

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 7392 6322 605 605 8.18% 9.57%
B 7392 6323 12 12 0.16% 0.19%
C 7392 6323 5 5 0.07% 0.08%
D 7392 6323 478 478 6.47% 7.56%

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 10 83 2199244 15480.29 689 676 142.0
A 15 223 1555111 10944.9 689 676 142.0
A 2 79 28838 198.29 689 676 142.0
B 3 112 1302447 9084.81 736 714 143.3
B 5 185 62704 432.63 736 714 143.3
B 0 183 56376 388.47 736 714 143.3
C 12 2 33998 192.11 740 743 173.1
C 3 233 26150 146.77 740 743 173.1
C 14 254 22911 128.06 740 743 173.1
D 13 249 715610 3985.16 721 699 179.4
D 5 235 708033 3942.92 721 699 179.4
D 8 230 675800 3763.24 721 699 179.4

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