ASTROSAT CZTI

Data Quality Report

Orbit 54212

Creation date: 2025-10-05T21:08:13.876155
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/AS1C09_004T08_9000006514_54212cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54212cztM0_level2_quad_clean.evt
Size (bytes)482,353,92091,146,240
Size460.0 MB 86.9 MB
Events in quadrant A4,232,450589,272
Events in quadrant B3,586,802674,225
Events in quadrant C2,964,327583,155
Events in quadrant D6,580,123472,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170351
B0150461
C0136931
D0238631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63175688.991610%
B63181772.801519%
C6318871.377018%
D6318108717.204812%

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 7387 6317 472 472 6.39% 7.47%
B 7388 6318 49 49 0.66% 0.78%
C 7388 6318 67 67 0.91% 1.06%
D 7388 6318 1106 1106 14.97% 17.51%

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 7 29 1446186 8829.59 654 637 163.7
A 4 3 61515 371.85 654 637 163.7
A 0 8 58872 355.71 654 637 163.7
B 4 67 231387 1644.21 666 643 140.3
B 4 171 217933 1548.34 666 643 140.3
B 5 236 118505 839.85 666 643 140.3
C 12 252 251210 1399.79 650 641 179.0
C 14 254 71291 394.68 650 641 179.0
C 15 233 26101 142.23 650 641 179.0
D 8 176 3616000 20949.91 610 583 172.6
D 3 12 215761 1246.87 610 583 172.6
D 1 3 56339 323.08 610 583 172.6

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