ASTROSAT CZTI

Data Quality Report

Orbit 33554

Creation date: 2024-06-27T20:50:05.673128
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/AS1A11_060T01_9000004808_33554cztM0_level2.evt modeM0/AS1A11_060T01_9000004808_33554cztM0_level2_quad_clean.evt
Size (bytes)596,376,00065,733,120
Size568.7 MB 62.7 MB
Events in quadrant A2,892,903430,535
Events in quadrant B4,618,123402,700
Events in quadrant C3,564,923422,539
Events in quadrant D6,634,435370,645

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117423
B0170142
C0140542
D0232032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5195591.135707%
B519568813.243503%
C51951262.425409%
D5195134525.890279%

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 7318 5196 37 37 0.51% 0.71%
B 7318 5196 574 574 7.84% 11.05%
C 7318 5196 106 106 1.45% 2.04%
D 7318 5196 1308 1308 17.87% 25.17%

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 15 169 379571 2906.36 650 638 130.4
A 13 254 7821 55.09 650 638 130.4
A 10 83 6251 43.05 650 638 130.4
B 5 172 1664504 14400.55 618 603 115.5
B 15 222 191732 1654.16 618 603 115.5
B 4 251 187321 1615.99 618 603 115.5
C 0 10 278307 1837.74 649 656 151.1
C 14 254 246027 1624.09 649 656 151.1
C 15 214 224350 1480.61 649 656 151.1
D 2 31 2985452 22324.23 554 541 133.7
D 8 195 870725 6508.13 554 541 133.7
D 13 249 490285 3662.81 554 541 133.7

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