ASTROSAT CZTI

Data Quality Report

Orbit 22491

Creation date: 2024-06-27T18:41:53.205705
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/AS1A07_144T02_9000003340_22491cztM0_level2.evt modeM0/AS1A07_144T02_9000003340_22491cztM0_level2_quad_clean.evt
Size (bytes)672,655,68099,815,040
Size641.5 MB 95.2 MB
Events in quadrant A5,616,687751,467
Events in quadrant B5,869,156767,096
Events in quadrant C1,625,72581
Events in quadrant D6,483,332720,403

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238275
B0245647
C0112853
D02658621

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A112831261.116724%
B112821371.214324%
C1128111281100.000000%
D112752061.827051%

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 13455 11285 0 0 0.00% 0.00%
B 13455 11284 1 1 0.01% 0.01%
C 13453 11280 0 0 0.00% 0.00%
D 13454 11282 89 89 0.66% 0.79%

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 3 1 17762 56.34 1453 1422 290.0
A 13 254 16965 53.59 1453 1422 290.0
A 0 226 12638 38.67 1453 1422 290.0
B 15 33 90173 327.38 1441 1404 271.1
B 0 190 65226 235.38 1441 1404 271.1
B 12 111 32530 114.79 1441 1404 271.1
C 7 119 1603373 726916.11 4 4 2.2
C 7 226 3404 1541.45 4 4 2.2
C 14 238 1955 884.52 4 4 2.2
D 1 52 612652 1771.08 1419 1380 345.1
D 1 20 188748 542.87 1419 1380 345.1
D 7 223 171184 491.98 1419 1380 345.1

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