ASTROSAT CZTI

Data Quality Report

Orbit 24902

Creation date: 2024-06-27T19:11:15.697846
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/AS1A08_003T15_9000003648_24902cztM0_level2.evt modeM0/AS1A08_003T15_9000003648_24902cztM0_level2_quad_clean.evt
Size (bytes)221,443,20025,571,520
Size211.2 MB 24.4 MB
Events in quadrant A1,619,463141,875
Events in quadrant B1,607,983145,738
Events in quadrant C1,595,804136,974
Events in quadrant D1,674,913133,039

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065911
B064841
C064751
D068321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30341655.438365%
B30341525.009888%
C30341595.240606%
D30341063.493738%

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 3269 3036 14 14 0.43% 0.46%
B 3269 3036 0 0 0.00% 0.00%
C 3269 3036 0 0 0.00% 0.00%
D 3269 3036 1 1 0.03% 0.03%

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 6 16 58655 689.55 405 395 84.5
A 13 254 4648 50.34 405 395 84.5
A 3 137 3983 42.47 405 395 84.5
B 12 111 10299 123.49 403 392 80.2
B 11 111 9548 114.12 403 392 80.2
B 4 80 8589 102.17 403 392 80.2
C 14 238 60600 643.26 388 390 93.6
C 7 247 8485 86.48 388 390 93.6
C 2 16 4323 42.02 388 390 93.6
D 8 195 92915 946.13 395 382 97.8
D 1 52 43029 436.06 395 382 97.8
D 13 174 22720 228.4 395 382 97.8

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