ASTROSAT CZTI

Data Quality Report

Orbit 39304

Creation date: 2024-06-27T22:02:58.428076
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_044T04_9000005464_39304cztM0_level2.fits modeM0/AS1A12_044T04_9000005464_39304cztM0_level2_quad_clean.evt
Size (bytes)530,735,04075,778,560
Size506.1 MB 72.3 MB
Events in quadrant A3,067,055592,583
Events in quadrant B2,962,436602,525
Events in quadrant C2,714,974584,383
Events in quadrant D10,512,366164,482

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120993
B0119932
C0111242
D0346552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4998841.680672%
B49981312.621048%
C4998420.840336%
D4998363972.809124%

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 7060 4999 64 64 0.91% 1.28%
B 7060 4999 111 111 1.57% 2.22%
C 7060 4999 34 34 0.48% 0.68%
D 7060 4999 2835 2835 40.16% 56.71%

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 462039 3964.12 573 561 116.4
A 13 248 339165 2908.63 573 561 116.4
A 2 79 18311 152.47 573 561 116.4
B 0 186 341311 3162.28 565 552 107.8
B 0 229 227221 2103.51 565 552 107.8
B 5 184 57037 524.19 565 552 107.8
C 14 254 250187 1975.58 552 555 126.4
C 15 214 218011 1720.94 552 555 126.4
C 9 187 67020 526.0 552 555 126.4
D 12 235 8022258 92920.69 346 335 86.3
D 5 222 847139 9808.82 346 335 86.3
D 13 249 54665 629.32 346 335 86.3

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