ASTROSAT CZTI

Data Quality Report

Orbit 54927

Creation date: 2025-11-23T02:47:16.230656
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/AS1A14_014T01_9000006528_54927cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54927cztM0_level2_quad_clean.evt
Size (bytes)1,996,655,040320,581,440
Size1.9 GB 305.7 MB
Events in quadrant A12,792,3752,190,234
Events in quadrant B11,013,0312,379,541
Events in quadrant C20,072,2332,001,650
Events in quadrant D28,197,9331,500,183

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0547174
B0507604
C0761494
D01000794

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04840
B04840
C04840
D04840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A237418453.559244%
B237425792.438716%
C2374122049.283518%
D23741541322.800219%

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 25927 23743 301 301 1.16% 1.27%
B 25928 23744 52 52 0.20% 0.22%
C 25927 23743 1571 1571 6.06% 6.62%
D 25927 23743 4643 4643 17.91% 19.56%

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 3 45 1442129 2254.9 2600 2527 638.4
A 3 14 463788 722.49 2600 2527 638.4
A 0 8 305497 474.55 2600 2527 638.4
B 10 247 340170 615.73 2572 2476 548.4
B 7 252 135333 242.24 2572 2476 548.4
B 5 32 83843 148.36 2572 2476 548.4
C 4 5 4381250 6490.0 2472 2453 674.7
C 12 252 2562370 3794.16 2472 2453 674.7
C 6 223 1488212 2202.11 2472 2453 674.7
D 15 94 5407097 8323.54 2302 2200 649.4
D 11 129 4694447 7226.06 2302 2200 649.4
D 6 239 2361884 3633.91 2302 2200 649.4

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