ASTROSAT CZTI

Data Quality Report

Orbit 38500

Creation date: 2024-06-27T21:53:35.698489
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_018T01_9000005386_38500cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38500cztM0_level2_quad_clean.evt
Size (bytes)345,991,68093,320,640
Size330.0 MB 89.0 MB
Events in quadrant A2,994,025628,191
Events in quadrant B3,603,968633,185
Events in quadrant C2,658,252610,983
Events in quadrant D3,114,708561,231

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123623
B0144712
C0114372
D0132232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5604190.339044%
B56041853.301213%
C560450.089222%
D56041202.141328%

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 7217 5605 8 8 0.11% 0.14%
B 7217 5605 104 104 1.44% 1.86%
C 7217 5605 2 2 0.03% 0.04%
D 7217 5605 89 89 1.23% 1.59%

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 407325 3168.16 627 615 128.4
A 15 222 81290 628.44 627 615 128.4
A 12 189 38731 296.91 627 615 128.4
B 8 3 1019965 8596.46 617 599 118.6
B 4 170 58672 489.74 617 599 118.6
B 0 229 48364 402.81 617 599 118.6
C 15 214 236174 1663.22 607 609 141.6
C 0 10 19286 131.87 607 609 141.6
C 1 23 13458 90.72 607 609 141.6
D 12 233 179056 1230.91 601 584 145.0
D 10 118 173083 1189.71 601 584 145.0
D 2 250 136130 934.85 601 584 145.0

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