ASTROSAT CZTI

Data Quality Report

Orbit 48470

Creation date: 2024-09-14T11:39:55.831778
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_029T01_9000006426_48470cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48470cztM0_level2_quad_clean.evt
Size (bytes)1,039,772,160217,448,640
Size991.6 MB 207.4 MB
Events in quadrant A14,502,3551,463,520
Events in quadrant B9,133,0361,389,086
Events in quadrant C6,219,3041,458,094
Events in quadrant D7,527,3471,284,921

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0528996
B0376442
C0295672
D0335102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02900
B02900
C02900
D02900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A143065493.837551%
B14307145810.190816%
C143071090.761865%
D143085273.683254%

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 15007 14308 43 43 0.29% 0.30%
B 15007 14308 886 886 5.90% 6.19%
C 15007 14309 20 20 0.13% 0.14%
D 15008 14310 343 343 2.29% 2.40%

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 8309784 25722.53 1556 1523 323.0
A 7 3 149762 458.95 1556 1523 323.0
A 13 254 27283 79.75 1556 1523 323.0
B 12 16 3046219 10311.61 1499 1450 295.3
B 0 186 57434 189.6 1499 1450 295.3
B 12 111 38219 124.52 1499 1450 295.3
C 15 208 134089 363.91 1541 1546 364.2
C 12 250 27432 71.07 1541 1546 364.2
C 14 254 16221 40.29 1541 1546 364.2
D 12 233 929257 2443.25 1517 1467 379.7
D 2 249 230511 603.17 1517 1467 379.7
D 10 199 193649 506.09 1517 1467 379.7

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