ASTROSAT CZTI

Data Quality Report

Orbit 35407

Creation date: 2022-09-12T18:43:38.244108
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_022T01_9000005070_35407cztM0_level2.evt modeM0/AS1T05_022T01_9000005070_35407cztM0_level2_quad_clean.evt
Size (bytes)638,449,92062,438,400
Size608.9 MB 59.5 MB
Events in quadrant A2,562,924407,573
Events in quadrant B8,404,014349,125
Events in quadrant C3,028,226407,283
Events in quadrant D5,008,611381,402

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104163
B0283602
C0117302
D0183392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A491970.142305%
B4919225745.883310%
C49191212.459850%
D491958411.872332%

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 7042 4920 1 1 0.01% 0.02%
B 7042 4920 1881 1881 26.71% 38.23%
C 7042 4920 95 95 1.35% 1.93%
D 7042 4920 458 458 6.50% 9.31%

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 125314 1016.29 619 608 122.7
A 9 143 26524 211.2 619 608 122.7
A 13 6 9873 75.5 619 608 122.7
B 4 251 5654240 58787.55 511 498 96.2
B 5 236 239266 2482.71 511 498 96.2
B 5 172 153148 1587.25 511 498 96.2
C 0 10 427882 3052.24 608 613 140.0
C 15 214 202636 1443.17 608 613 140.0
C 3 233 23240 161.64 608 613 140.0
D 7 80 1581331 11293.51 580 565 140.0
D 8 195 539307 3848.95 580 565 140.0
D 12 233 189510 1349.88 580 565 140.0

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