ASTROSAT CZTI

Data Quality Report

Orbit 37477

Creation date: 2024-06-27T21:40:30.395212
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/AS1A11_027T01_9000005324_37477cztM0_level2.evt modeM0/AS1A11_027T01_9000005324_37477cztM0_level2_quad_clean.evt
Size (bytes)434,206,080107,377,920
Size414.1 MB 102.4 MB
Events in quadrant A2,794,048726,545
Events in quadrant B2,874,699753,329
Events in quadrant C3,396,707723,865
Events in quadrant D3,726,904679,727

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115703
B0118172
C0131552
D0145672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5261140.266109%
B5261480.912374%
C52612354.466831%
D52612915.531268%

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 7353 5262 6 6 0.08% 0.11%
B 7353 5262 27 27 0.37% 0.51%
C 7353 5261 204 204 2.77% 3.88%
D 7353 5262 280 280 3.81% 5.32%

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 10 83 272062 2206.65 618 607 123.0
A 15 222 77576 625.68 618 607 123.0
A 6 10 17307 135.75 618 607 123.0
B 5 255 173989 1485.64 625 608 116.7
B 0 229 75125 638.51 625 608 116.7
B 5 172 66029 560.57 625 608 116.7
C 14 254 614120 4458.21 607 611 137.6
C 15 214 218542 1583.64 607 611 137.6
C 0 10 158613 1148.16 607 611 137.6
D 13 249 1046637 7315.06 596 580 143.0
D 2 250 114247 794.87 596 580 143.0
D 2 153 98717 686.27 596 580 143.0

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