ASTROSAT CZTI

Data Quality Report

Orbit 37371

Creation date: 2024-06-27T21:39:07.950605
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/AS1T05_048T01_9000005318_37371cztM0_level2.evt modeM0/AS1T05_048T01_9000005318_37371cztM0_level2_quad_clean.evt
Size (bytes)411,160,32063,662,400
Size392.1 MB 60.7 MB
Events in quadrant A2,671,755391,729
Events in quadrant B2,763,634401,612
Events in quadrant C2,670,143399,786
Events in quadrant D3,986,911363,899

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011457115
B011774121
C01130692
D015767321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01071
C01090
D01090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5298260.490751%
B5301510.962083%
C5303360.678861%
D52661422.696544%

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 7038 5349 15 15 0.21% 0.28%
B 7038 5346 35 35 0.50% 0.65%
C 7038 5344 28 28 0.40% 0.52%
D 7038 5335 147 147 2.09% 2.76%

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 10 83 275429 2277.76 594 582 120.7
A 13 248 65714 539.77 594 582 120.7
A 13 6 19503 156.81 594 582 120.7
B 5 172 129251 1117.25 597 583 115.2
B 4 171 71590 616.57 597 583 115.2
B 0 213 58120 499.6 597 583 115.2
C 15 214 224177 1634.35 582 587 136.8
C 0 10 98832 718.13 582 587 136.8
C 14 254 53218 384.71 582 587 136.8
D 12 235 1025711 7463.1 567 553 137.4
D 2 249 408520 2969.98 567 553 137.4
D 12 227 164538 1193.8 567 553 137.4

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