ASTROSAT CZTI

Data Quality Report

Orbit 39090

Creation date: 2024-06-27T22:00:17.985321
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_067T01_9000005432_39090cztM0_level2.fits modeM0/AS1T05_067T01_9000005432_39090cztM0_level2_quad_clean.evt
Size (bytes)381,484,80096,226,560
Size363.8 MB 91.8 MB
Events in quadrant A3,927,178646,375
Events in quadrant B2,662,474666,286
Events in quadrant C3,658,252613,926
Events in quadrant D3,419,547579,150

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152733
B0118362
C0146472
D0140602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5835861.473865%
B5835100.171380%
C58351652.827763%
D5835550.942588%

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 7119 5836 41 41 0.58% 0.70%
B 7119 5836 2 2 0.03% 0.03%
C 7119 5836 146 146 2.05% 2.50%
D 7119 5836 45 45 0.63% 0.77%

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 15 223 818093 6085.24 650 637 134.3
A 10 83 442379 3288.38 650 637 134.3
A 7 3 115086 851.97 650 637 134.3
B 5 184 47284 370.72 649 631 125.8
B 0 230 25068 194.18 649 631 125.8
B 5 172 23026 177.96 649 631 125.8
C 15 208 917680 6221.33 629 631 147.4
C 15 214 243320 1646.42 629 631 147.4
C 9 187 19229 126.17 629 631 147.4
D 12 235 599012 3877.85 628 609 154.3
D 2 249 158150 1020.92 628 609 154.3
D 1 47 107279 691.26 628 609 154.3

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