ASTROSAT CZTI

Data Quality Report

Orbit 06858

Creation date: 2024-06-27T15:13:17.343354
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/AS1G06_164T01_9000000946_06858cztM0_level2.evt modeM0/AS1G06_164T01_9000000946_06858cztM0_level2_quad_clean.evt
Size (bytes)765,132,480134,303,040
Size729.7 MB 128.1 MB
Events in quadrant A5,385,883841,203
Events in quadrant B5,376,990835,186
Events in quadrant C5,336,568809,332
Events in quadrant D6,302,769795,321

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236203
B0235344
C0234492
D0261422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113641611.416755%
B113631621.425680%
C113641381.214361%
D113641931.698346%

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 13549 11366 0 0 0.00% 0.00%
B 13549 11365 7 7 0.05% 0.06%
C 13549 11366 3 3 0.02% 0.03%
D 13549 11365 48 48 0.35% 0.42%

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 77625 277.02 1365 1333 275.4
A 8 15 21199 72.14 1365 1333 275.4
A 13 248 16023 53.34 1365 1333 275.4
B 12 111 25968 95.7 1364 1332 257.4
B 0 219 24347 89.4 1364 1332 257.4
B 11 111 21191 77.14 1364 1332 257.4
C 9 247 137955 453.43 1313 1318 301.3
C 9 16 19367 59.9 1313 1318 301.3
C 1 3 18957 58.54 1313 1318 301.3
D 2 152 519321 1607.1 1323 1283 322.3
D 8 195 249465 769.93 1323 1283 322.3
D 2 216 135657 416.86 1323 1283 322.3

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