ASTROSAT CZTI

Data Quality Report

Orbit 52499

Creation date: 2025-06-26T09:30:15.815352
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/AS1A13_037T01_9000006476_52499cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52499cztM0_level2_quad_clean.evt
Size (bytes)249,393,60033,497,280
Size237.8 MB 31.9 MB
Events in quadrant A1,112,218242,382
Events in quadrant B1,898,606248,073
Events in quadrant C4,116,911129,265
Events in quadrant D1,896,685204,853

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140132126029864140131897966638
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055180
B075730
C0139960
D074600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0530
C0590
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A273800.000000%
B26851465.437616%
C2537109943.318881%
D2592170.655864%

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 6847 2888 0 0 0.00% 0.00%
B 6847 2841 126 126 1.84% 4.44%
C 6845 2655 1067 1067 15.59% 40.19%
D 6848 2726 25 25 0.37% 0.92%

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 8 249 10816 155.32 272 265 67.9
A 8 9 9690 138.74 272 265 67.9
A 11 3 9050 129.32 272 265 67.9
B 10 44 659214 11453.35 259 251 57.5
B 4 81 57181 989.49 259 251 57.5
B 10 254 53238 920.96 259 251 57.5
C 15 224 2677596 53684.03 178 176 49.9
C 4 5 297862 5968.8 178 176 49.9
C 2 12 262454 5258.85 178 176 49.9
D 15 93 696290 9895.46 242 230 70.3
D 6 42 137193 1947.12 242 230 70.3
D 2 153 40194 568.14 242 230 70.3

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