ASTROSAT CZTI

Data Quality Report

Orbit 43908

Creation date: 2024-06-27T22:57:03.654709
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_009T02_9000005914_43908cztM0_level2.fits modeM0/AS1A13_009T02_9000005914_43908cztM0_level2_quad_clean.evt
Size (bytes)1,735,297,920339,341,760
Size1.6 GB 323.6 MB
Events in quadrant A22,381,6062,166,814
Events in quadrant B10,955,4362,468,187
Events in quadrant C9,635,7352,342,036
Events in quadrant D19,609,1371,822,874

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04360
B04360
C04360
D04360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0823157
B0472434
C0443104
D0733314

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2141420489.563837%
B214143121.456991%
C21414780.364248%
D21414270712.641263%

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 25709 21418 1632 1632 6.35% 7.62%
B 25709 21418 115 115 0.45% 0.54%
C 25709 21418 12 12 0.05% 0.06%
D 25709 21418 2497 2497 9.71% 11.66%

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 15 223 7624641 15928.56 2340 2295 478.5
A 10 83 3295401 6881.66 2340 2295 478.5
A 15 222 1408767 2939.13 2340 2295 478.5
B 5 172 586767 1255.14 2401 2331 465.6
B 0 200 315727 673.05 2401 2331 465.6
B 5 235 268733 572.13 2401 2331 465.6
C 3 233 189703 342.13 2350 2369 547.6
C 14 254 128582 230.5 2350 2369 547.6
C 15 157 36353 62.07 2350 2369 547.6
D 1 52 2686211 4836.51 2219 2158 555.0
D 12 233 2199536 3959.55 2219 2158 555.0
D 12 128 1081476 1944.87 2219 2158 555.0

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