ASTROSAT CZTI

Data Quality Report

Orbit 16527

Creation date: 2024-06-27T17:23:58.483479
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_018T01_9000002442_16527cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16527cztM0_level2_quad_clean.evt
Size (bytes)235,825,92041,702,400
Size224.9 MB 39.8 MB
Events in quadrant A1,658,159261,111
Events in quadrant B1,882,698268,955
Events in quadrant C1,726,902258,864
Events in quadrant D1,655,825246,667

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068292
B075371
C069851
D069451

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3183441.382344%
B3183652.042099%
C3183631.979265%
D3183310.973924%

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 4334 3184 0 0 0.00% 0.00%
B 4334 3184 1 1 0.02% 0.03%
C 4334 3184 0 0 0.00% 0.00%
D 4334 3185 16 16 0.37% 0.50%

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 15 174 26722 303.55 421 412 86.7
A 15 223 7400 80.62 421 412 86.7
A 0 226 3747 38.48 421 412 86.7
B 15 35 111950 1346.92 425 415 82.8
B 4 216 24054 285.47 425 415 82.8
B 10 16 21407 253.5 425 415 82.8
C 14 238 63655 662.9 404 408 95.4
C 3 233 59006 614.17 404 408 95.4
C 7 247 25274 260.62 404 408 95.4
D 7 38 64583 639.27 405 393 100.4
D 1 52 25641 251.45 405 393 100.4
D 2 234 12689 122.46 405 393 100.4

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