ASTROSAT CZTI

Data Quality Report

Orbit 21217

Creation date: 2024-06-27T18:25:05.849652
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_005T05_9000003136_21217cztM0_level2.evt modeM0/AS1A06_005T05_9000003136_21217cztM0_level2_quad_clean.evt
Size (bytes)514,103,040102,401,280
Size490.3 MB 97.7 MB
Events in quadrant A3,463,960680,654
Events in quadrant B3,101,424706,426
Events in quadrant C3,017,783672,806
Events in quadrant D5,584,598627,028

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140781
B0130881
C0129251
D0206171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59282113.559379%
B5929741.248103%
C5929901.517963%
D59295849.849890%

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 7093 5928 123 123 1.73% 2.07%
B 7094 5929 14 14 0.20% 0.24%
C 7094 5929 0 0 0.00% 0.00%
D 7094 5929 576 576 8.12% 9.71%

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 5 16 385576 2549.83 753 738 150.9
A 11 47 135661 893.96 753 738 150.9
A 15 236 45304 295.28 753 738 150.9
B 0 189 57594 399.88 757 741 142.2
B 3 64 25267 172.51 757 741 142.2
B 0 190 24402 166.42 757 741 142.2
C 14 238 114083 679.31 719 724 166.9
C 3 233 88890 528.34 719 724 166.9
C 0 207 9213 50.87 719 724 166.9
D 7 238 1813803 10447.38 717 697 173.5
D 1 239 289567 1664.51 717 697 173.5
D 13 153 196338 1127.31 717 697 173.5

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