ASTROSAT CZTI

Data Quality Report

Orbit 04842

Creation date: 2024-06-27T14:47:46.955486
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/AS1G05_253T02_9000000614_04842cztM0_level2.evt modeM0/AS1G05_253T02_9000000614_04842cztM0_level2_quad_clean.evt
Size (bytes)825,549,120106,191,360
Size787.3 MB 101.3 MB
Events in quadrant A5,831,849614,306
Events in quadrant B5,938,121613,370
Events in quadrant C5,944,674613,870
Events in quadrant D6,468,642539,143

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030761
B030751
C030755
D030953

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325606493
B0332997426
C0333946967
D0358217778

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A120993743.091165%
B120242001.663340%
C120121090.907426%
D120123322.763903%

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 16518 12868 51 51 0.31% 0.40%
B 16518 12759 9 9 0.05% 0.07%
C 16518 12763 1 1 0.01% 0.01%
D 16518 12770 161 161 0.97% 1.26%

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 13 251 253720 891.24 1376 1341 283.2
A 14 111 152508 533.82 1376 1341 283.2
A 0 50 101892 355.08 1376 1341 283.2
B 4 80 220097 810.24 1401 1367 270.0
B 8 3 105328 385.1 1401 1367 270.0
B 4 239 48795 175.69 1401 1367 270.0
C 8 208 630595 1991.39 1343 1345 316.0
C 8 128 22084 65.63 1343 1345 316.0
C 1 16 18494 54.27 1343 1345 316.0
D 13 235 447801 1370.12 1324 1283 325.9
D 2 234 224248 684.16 1324 1283 325.9
D 2 136 214619 654.61 1324 1283 325.9

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