ASTROSAT CZTI

Data Quality Report

Orbit 35208

Creation date: 2022-04-03T01:19:47.300411
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/AS1C07_004T01_9000005052_35208cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35208cztM0_level2_quad_clean.evt
Size (bytes)603,357,12069,344,640
Size575.4 MB 66.1 MB
Events in quadrant A2,694,038450,730
Events in quadrant B5,930,019412,692
Events in quadrant C3,226,231441,787
Events in quadrant D6,039,304397,857

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117143
B0215202
C0131232
D0219812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A566860.105857%
B5668107919.036697%
C56681202.117149%
D566863811.256175%

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 7161 5669 1 1 0.01% 0.02%
B 7161 5669 674 674 9.41% 11.89%
C 7161 5669 102 102 1.42% 1.80%
D 7161 5669 618 618 8.63% 10.90%

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 104633 780.91 654 641 133.2
A 9 143 33202 244.51 654 641 133.2
A 13 6 12978 92.64 654 641 133.2
B 5 236 3415793 29018.43 610 595 117.7
B 4 232 59091 497.03 610 595 117.7
B 0 190 26110 216.8 610 595 117.7
C 0 10 374355 2549.24 628 633 146.6
C 15 214 236161 1606.59 628 633 146.6
C 1 23 74990 507.21 628 633 146.6
D 8 195 1613896 10785.08 608 592 149.6
D 10 118 743695 4967.71 608 592 149.6
D 5 157 449970 3004.13 608 592 149.6

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