ASTROSAT CZTI

Data Quality Report

Orbit 18877

Creation date: 2024-06-27T17:55:59.310331
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/AS1T03_094T01_9000002816_18877cztM0_level2.evt modeM0/AS1T03_094T01_9000002816_18877cztM0_level2_quad_clean.evt
Size (bytes)344,836,80044,599,680
Size328.9 MB 42.5 MB
Events in quadrant A2,017,425270,406
Events in quadrant B2,285,946274,903
Events in quadrant C2,011,556262,888
Events in quadrant D3,841,468244,978

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085190
B092280
C084840
D0142660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A421240.094967%
B4213310.735818%
C4213130.308569%
D42134189.921671%

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 4212 4212 2 2 0.05% 0.05%
B 4213 4213 11 11 0.26% 0.26%
C 4213 4213 0 0 0.00% 0.00%
D 4213 4213 312 312 7.41% 7.41%

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 20222 186.07 515 506 106.0
A 13 254 6719 58.63 515 506 106.0
A 9 143 5122 43.56 515 506 106.0
B 7 220 134882 1376.39 511 500 97.6
B 0 189 76157 774.91 511 500 97.6
B 0 198 28626 288.08 511 500 97.6
C 14 238 76616 659.98 491 495 115.3
C 3 233 8444 68.92 491 495 115.3
C 0 207 8025 65.29 491 495 115.3
D 12 218 885895 7520.68 482 469 117.7
D 12 1 418705 3552.43 482 469 117.7
D 1 52 303174 2571.13 482 469 117.7

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