ASTROSAT CZTI

Data Quality Report

Orbit 42616

Creation date: 2024-06-27T22:42:14.894064
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/AS1A05_174T01_9000005820_42616cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42616cztM0_level2_quad_clean.evt
Size (bytes)404,081,280111,804,480
Size385.4 MB 106.6 MB
Events in quadrant A3,622,338744,713
Events in quadrant B3,033,673772,224
Events in quadrant C3,286,631741,230
Events in quadrant D4,493,593659,858

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148462
B0136042
C0138232
D0180472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6703160.238699%
B6703120.179024%
C670390.134268%
D67042864.266110%

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 10080 6705 6 6 0.06% 0.09%
B 10080 6705 2 2 0.02% 0.03%
C 10080 6705 1 1 0.01% 0.01%
D 10081 6706 241 241 2.39% 3.59%

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 642702 4140.69 750 734 155.0
A 7 3 51502 327.45 750 734 155.0
A 15 237 13618 83.1 750 734 155.0
B 0 245 40068 270.73 746 725 145.3
B 12 111 18571 122.81 746 725 145.3
B 0 168 18556 122.7 746 725 145.3
C 15 214 276582 1577.65 743 750 174.8
C 14 254 50270 283.24 743 750 174.8
C 3 233 27243 151.53 743 750 174.8
D 1 52 714961 3988.45 729 710 179.1
D 12 6 528611 2947.85 729 710 179.1
D 13 249 148157 823.36 729 710 179.1

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