ASTROSAT CZTI

Data Quality Report

Orbit 40142

Creation date: 2024-06-27T22:12:49.019553
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/AS1A12_004T01_9000005520_40142cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40142cztM0_level2_quad_clean.evt
Size (bytes)510,027,84067,512,960
Size486.4 MB 64.4 MB
Events in quadrant A2,747,215553,834
Events in quadrant B2,090,368582,297
Events in quadrant C11,145,12184,769
Events in quadrant D2,543,548504,775

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111912
B092012
C0362212
D0107482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4529190.419519%
B4529120.264959%
C4529400088.319717%
D4529561.236476%

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 6621 4530 7 7 0.11% 0.15%
B 6621 4530 2 2 0.03% 0.04%
C 6620 4528 4032 4032 60.91% 89.05%
D 6621 4530 58 58 0.88% 1.28%

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 396220 3750.98 514 505 105.5
A 12 189 241847 2287.68 514 505 105.5
A 13 248 39264 367.4 514 505 105.5
B 5 172 18342 176.6 521 506 101.0
B 4 171 15598 149.43 521 506 101.0
B 12 111 12285 116.63 521 506 101.0
C 9 187 9864257 145903.72 286 288 67.6
C 15 214 109897 1621.29 286 288 67.6
C 0 10 19796 288.55 286 288 67.6
D 12 227 148761 1216.03 503 489 121.9
D 13 249 108275 883.99 503 489 121.9
D 9 19 91042 742.66 503 489 121.9

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