ASTROSAT CZTI

Data Quality Report

Orbit 32849

Creation date: 2024-06-27T20:42:56.182488
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_088T01_9000004738_32849cztM0_level2.evt modeM0/AS1A11_088T01_9000004738_32849cztM0_level2_quad_clean.evt
Size (bytes)256,694,40026,939,520
Size244.8 MB 25.7 MB
Events in quadrant A1,073,549167,597
Events in quadrant B1,771,344167,367
Events in quadrant C1,201,422173,261
Events in quadrant D3,571,415142,440

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046662
B067181
C050161
D0122081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2277100.439174%
B227725111.023276%
C2277381.668863%
D227769830.654370%

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 3590 2278 5 5 0.14% 0.22%
B 3590 2278 170 170 4.74% 7.46%
C 3590 2278 22 22 0.61% 0.97%
D 3590 2278 595 595 16.57% 26.12%

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 9 143 35112 626.72 267 262 55.6
A 13 254 4283 72.31 267 262 55.6
A 13 6 2848 46.5 267 262 55.6
B 5 172 626977 12146.06 256 250 51.6
B 0 197 51109 985.66 256 250 51.6
B 0 199 39108 753.07 256 250 51.6
C 0 10 142338 2293.58 259 261 61.9
C 3 233 33501 536.6 259 261 61.9
C 14 67 10035 157.78 259 261 61.9
D 8 195 659769 10972.52 230 225 60.1
D 12 227 527866 8778.11 230 225 60.1
D 12 6 434152 7219.03 230 225 60.1

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