ASTROSAT CZTI

Data Quality Report

Orbit 40415

Creation date: 2024-06-27T22:15:49.139448
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_022T01_9000005540_40415cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40415cztM0_level2_quad_clean.evt
Size (bytes)421,571,52083,514,240
Size402.0 MB 79.6 MB
Events in quadrant A2,922,663645,513
Events in quadrant B2,891,833661,371
Events in quadrant C2,659,160618,678
Events in quadrant D6,715,396230,855

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118733
B0122722
C0110992
D0236992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5319180.338409%
B531990.169205%
C5319130.244407%
D5319347865.388231%

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 7232 5320 7 7 0.10% 0.13%
B 7232 5320 3 3 0.04% 0.06%
C 7232 5320 7 7 0.10% 0.13%
D 7232 5319 1224 1224 16.92% 23.01%

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 464181 3717.92 615 604 124.7
A 13 248 67183 533.96 615 604 124.7
A 2 79 14646 112.61 615 604 124.7
B 7 202 377284 3221.65 607 592 116.9
B 5 255 44770 377.83 607 592 116.9
B 0 230 27598 230.97 607 592 116.9
C 15 214 233508 1705.79 591 596 136.5
C 14 254 74944 544.51 591 596 136.5
C 5 250 19734 140.16 591 596 136.5
D 2 250 4533698 49699.24 372 362 91.2
D 12 191 281878 3086.28 372 362 91.2
D 12 227 126651 1384.51 372 362 91.2

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