ASTROSAT CZTI

Data Quality Report

Orbit 20627

Creation date: 2024-06-27T18:17:35.666546
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/AS1A06_005T02_9000003048_20627cztM0_level2.evt modeM0/AS1A06_005T02_9000003048_20627cztM0_level2_quad_clean.evt
Size (bytes)569,784,96091,560,960
Size543.4 MB 87.3 MB
Events in quadrant A3,074,243634,341
Events in quadrant B3,291,923624,382
Events in quadrant C3,162,654587,095
Events in quadrant D7,314,088500,630

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129191
B0136141
C0133331
D0258925

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6103560.917582%
B61041081.769332%
C6104881.441678%
D6103130521.382926%

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 7413 6105 0 0 0.00% 0.00%
B 7414 6106 34 34 0.46% 0.56%
C 7414 6106 0 0 0.00% 0.00%
D 7413 6105 1141 1141 15.39% 18.69%

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 12 16 9846 57.11 793 780 158.7
A 5 16 8429 48.19 793 780 158.7
A 12 194 7676 43.44 793 780 158.7
B 0 244 66026 438.53 778 761 148.8
B 0 190 46197 305.3 778 761 148.8
B 5 172 46009 304.03 778 761 148.8
C 8 208 173852 1024.83 733 739 168.9
C 14 238 116735 686.69 733 739 168.9
C 9 54 6538 34.33 733 739 168.9
D 1 52 2225745 13171.0 699 679 168.9
D 5 222 1730241 10237.93 699 679 168.9
D 7 238 245301 1448.01 699 679 168.9

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