ASTROSAT CZTI

Data Quality Report

Orbit 42823

Creation date: 2024-06-27T22:44:40.450864
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/AS1C07_001T12_9000005826_42823cztM0_level2.fits modeM0/AS1C07_001T12_9000005826_42823cztM0_level2_quad_clean.evt
Size (bytes)307,416,96083,741,760
Size293.2 MB 79.9 MB
Events in quadrant A2,695,421559,282
Events in quadrant B2,554,336573,699
Events in quadrant C2,963,704548,567
Events in quadrant D2,783,730510,151

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110522
B0109982
C0119722
D0119252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4905400.815494%
B4905992.018349%
C49051703.465851%
D49051042.120285%

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 7058 4906 21 21 0.30% 0.43%
B 7058 4906 74 74 1.05% 1.51%
C 7058 4906 144 144 2.04% 2.94%
D 7058 4906 104 104 1.47% 2.12%

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 558932 5196.96 523 513 107.5
A 15 237 78019 721.31 523 513 107.5
A 2 79 13210 118.17 523 513 107.5
B 5 255 264622 2641.74 523 508 100.0
B 5 172 124256 1237.76 523 508 100.0
B 0 245 52077 515.81 523 508 100.0
C 14 254 700149 5938.2 512 515 117.8
C 15 214 195184 1652.27 512 515 117.8
C 3 233 54444 457.73 512 515 117.8
D 1 47 230813 1877.55 511 497 122.7
D 5 32 103532 839.95 511 497 122.7
D 1 52 89283 723.79 511 497 122.7

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