ASTROSAT CZTI

Data Quality Report

Orbit 12587

Creation date: 2024-06-27T16:29:38.778534
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/AS1G08_071T01_9000001874_12587cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12587cztM0_level2_quad_clean.evt
Size (bytes)536,820,48067,838,400
Size512.0 MB 64.7 MB
Events in quadrant A3,379,145398,656
Events in quadrant B4,327,725398,210
Events in quadrant C3,267,684399,433
Events in quadrant D4,818,076380,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145403
B0174692
C0142442
D0190212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68521321.926445%
B68523985.808523%
C68521111.619965%
D68525988.727379%

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 8513 6853 5 5 0.06% 0.07%
B 8513 6853 196 196 2.30% 2.86%
C 8513 6853 6 6 0.07% 0.09%
D 8513 6853 432 432 5.07% 6.30%

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 5 112 118598 691.12 836 817 170.4
A 12 189 23546 133.37 836 817 170.4
A 15 69 14405 79.73 836 817 170.4
B 4 239 540432 3374.32 822 801 159.9
B 3 64 401610 2506.27 822 801 159.9
B 11 51 90402 560.28 822 801 159.9
C 15 208 87375 457.53 813 816 189.2
C 13 61 5852 26.62 813 816 189.2
C 3 233 4746 20.77 813 816 189.2
D 1 52 1268533 6692.97 787 763 189.4
D 10 157 406813 2143.67 787 763 189.4
D 13 104 60919 317.58 787 763 189.4

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