ASTROSAT CZTI

Data Quality Report

Orbit 41644

Creation date: 2024-06-27T22:31:05.472576
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/AS1T05_116T01_9000005682_41644cztM0_level2.fits modeM0/AS1T05_116T01_9000005682_41644cztM0_level2_quad_clean.evt
Size (bytes)372,890,88091,503,360
Size355.6 MB 87.3 MB
Events in quadrant A3,010,109623,919
Events in quadrant B2,896,991641,566
Events in quadrant C3,074,567583,904
Events in quadrant D4,386,451530,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122912
B0122882
C0125982
D0168482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5589200.357846%
B5589220.393630%
C55891943.471104%
D55893766.727500%

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 7292 5590 4 4 0.05% 0.07%
B 7292 5590 14 14 0.19% 0.25%
C 7292 5590 190 190 2.61% 3.40%
D 7292 5590 343 343 4.70% 6.14%

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 537842 4172.94 626 613 128.7
A 13 248 39237 300.01 626 613 128.7
A 13 254 7192 51.1 626 613 128.7
B 0 186 330128 2738.84 618 600 120.3
B 7 202 50198 412.23 618 600 120.3
B 0 190 43023 352.59 618 600 120.3
C 0 10 520307 3724.42 596 599 139.5
C 15 214 228556 1633.62 596 599 139.5
C 9 54 4329 26.73 596 599 139.5
D 13 249 1026571 6990.7 593 574 146.8
D 1 47 485240 3302.31 593 574 146.8
D 5 222 257970 1753.79 593 574 146.8

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