ASTROSAT CZTI

Data Quality Report

Orbit 52074

Creation date: 2025-05-14T21:37:27.155625
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_011T07_9000006470_52074cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52074cztM0_level2_quad_clean.evt
Size (bytes)804,841,92071,112,960
Size767.6 MB 67.8 MB
Events in quadrant A3,745,971582,654
Events in quadrant B6,033,131532,507
Events in quadrant C8,078,889405,711
Events in quadrant D11,491,938231,373

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01182
B01160
C01171
D01171

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121
B0110
C0110
D0121

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015172249
B022132263
C028427492
D038650556

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57362283.974895%
B573590815.832607%
C5722183031.981825%
D5726323656.514146%

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 7009 5753 153 153 2.18% 2.66%
B 7009 5755 670 670 9.56% 11.64%
C 7009 5736 1622 1622 23.14% 28.28%
D 7009 5740 3244 3244 46.28% 56.52%

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 14 492392 3140.39 618 604 156.6
A 3 95 174036 1107.48 618 604 156.6
A 4 3 137218 872.37 618 604 156.6
B 5 172 1378151 11319.26 572 554 121.7
B 10 128 1186581 9745.19 572 554 121.7
B 12 3 306639 2515.0 572 554 121.7
C 15 224 5044193 33933.34 523 519 148.6
C 5 80 148269 994.05 523 519 148.6
C 13 3 106369 712.15 523 519 148.6
D 15 94 4685641 38296.35 423 404 122.3
D 6 42 3735589 30530.79 423 404 122.3
D 12 3 455825 3722.54 423 404 122.3

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