ASTROSAT CZTI

Data Quality Report

Orbit 15220

Creation date: 2024-06-27T17:05:27.711565
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/AS1T02_071T01_9000002246_15220cztM0_level2.evt modeM0/AS1T02_071T01_9000002246_15220cztM0_level2_quad_clean.evt
Size (bytes)1,126,126,080165,666,240
Size1.0 GB 158.0 MB
Events in quadrant A12,927,8141,054,693
Events in quadrant B9,366,5431,046,490
Events in quadrant C6,689,7831,142,225
Events in quadrant D4,476,8011,108,649

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0451261
B0343521
C0265681
D0203551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9578149815.640008%
B9578173518.114429%
C95781821.900188%
D95781541.607851%

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 9864 9579 986 986 10.00% 10.29%
B 9864 9579 1222 1222 12.39% 12.76%
C 9864 9580 41 41 0.42% 0.43%
D 9864 9579 61 61 0.62% 0.64%

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 0 253 8409967 39208.78 1053 1028 214.5
A 12 189 426518 1983.95 1053 1028 214.5
A 13 248 20680 91.63 1053 1028 214.5
B 3 112 4353233 22818.13 1009 982 190.7
B 3 64 344250 1799.69 1009 982 190.7
B 0 245 321306 1679.4 1009 982 190.7
C 3 233 2135723 8813.36 1056 1061 242.2
C 4 254 389107 1602.12 1056 1061 242.2
C 7 247 21802 85.63 1056 1061 242.2
D 7 38 245997 952.4 1061 1030 257.2
D 2 33 90098 346.29 1061 1030 257.2
D 2 234 39363 149.03 1061 1030 257.2

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