ASTROSAT CZTI

Data Quality Report

Orbit 46710

Creation date: 2024-06-27T23:26:43.292508
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_037T01_9000006256_46710cztM0_level2.fits modeM0/AS1A13_037T01_9000006256_46710cztM0_level2_quad_clean.evt
Size (bytes)1,650,029,760360,745,920
Size1.5 GB 344.0 MB
Events in quadrant A20,879,0252,374,004
Events in quadrant B11,575,4532,503,055
Events in quadrant C10,256,1212,405,386
Events in quadrant D16,635,3202,096,118

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0829266169
B0545453823
C0526265046
D0707485392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050346
B051357
C050345
D050751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06928
B05615
C05514
D06221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A223768783.923847%
B224565152.293374%
C224572751.224562%
D2243816337.277832%

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 31789 22534 114 114 0.36% 0.51%
B 31789 22620 53 53 0.17% 0.23%
C 31788 22611 116 116 0.36% 0.51%
D 31789 22595 1310 1310 4.12% 5.80%

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 10952755 21602.32 2451 2400 506.9
A 9 191 202558 394.86 2451 2400 506.9
A 13 248 99064 190.69 2451 2400 506.9
B 4 171 945946 1928.98 2490 2413 489.1
B 0 190 174729 352.29 2490 2413 489.1
B 0 198 170449 343.54 2490 2413 489.1
C 12 2 390001 677.6 2448 2461 571.9
C 1 3 106649 182.17 2448 2461 571.9
C 3 233 103457 176.59 2448 2461 571.9
D 13 168 3654974 6132.94 2375 2304 595.6
D 1 52 2024130 3394.7 2375 2304 595.6
D 13 249 665389 1113.34 2375 2304 595.6

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