ASTROSAT CZTI

Data Quality Report

Orbit 42849

Creation date: 2024-06-27T22:44:58.062121
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_138T01_9000005828_42849cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42849cztM0_level2_quad_clean.evt
Size (bytes)493,410,24083,583,360
Size470.6 MB 79.7 MB
Events in quadrant A3,173,012615,631
Events in quadrant B7,063,433419,240
Events in quadrant C3,159,113609,414
Events in quadrant D4,457,944515,524

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127162
B0246212
C0127832
D0169489

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5289300.567215%
B5289179133.862734%
C52891222.306674%
D528855110.419818%

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 7172 5290 21 21 0.29% 0.40%
B 7171 5288 1724 1724 24.04% 32.60%
C 7172 5290 130 130 1.81% 2.46%
D 7170 5288 521 521 7.27% 9.85%

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 625011 5146.47 593 581 121.3
A 13 248 149692 1228.95 593 581 121.3
A 12 189 61964 505.91 593 581 121.3
B 4 81 4806562 53632.48 461 449 89.6
B 4 171 299519 3337.39 461 449 89.6
B 15 85 60736 672.76 461 449 89.6
C 14 254 641462 4752.15 571 576 134.9
C 15 214 214830 1588.69 571 576 134.9
C 2 16 44000 321.99 571 576 134.9
D 10 118 800460 6026.09 542 529 132.7
D 1 52 715316 5384.68 542 529 132.7
D 2 249 236284 1776.0 542 529 132.7

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