ASTROSAT CZTI

Data Quality Report

Orbit 36626

Creation date: 2024-06-27T21:29:22.087470
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/AS1A10_073T02_9000005226_36626cztM0_level2.evt modeM0/AS1A10_073T02_9000005226_36626cztM0_level2_quad_clean.evt
Size (bytes)622,123,20090,167,040
Size593.3 MB 86.0 MB
Events in quadrant A3,241,324608,572
Events in quadrant B4,013,092600,304
Events in quadrant C3,536,913602,756
Events in quadrant D7,668,855524,090

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130873
B0155442
C0138602
D0267102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56311172.077784%
B56313225.718345%
C56312284.049014%
D5631112920.049725%

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 9487 5633 95 95 1.00% 1.69%
B 9487 5633 236 236 2.49% 4.19%
C 9487 5633 170 170 1.79% 3.02%
D 9487 5633 1148 1148 12.10% 20.38%

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 15 223 415721 3089.69 665 652 134.3
A 10 83 213659 1585.58 665 652 134.3
A 9 143 35410 258.73 665 652 134.3
B 5 200 1166518 9429.75 647 631 123.6
B 0 219 79608 638.77 647 631 123.6
B 15 35 72518 581.43 647 631 123.6
C 0 10 398680 2706.53 632 636 147.1
C 15 214 234574 1590.68 632 636 147.1
C 12 249 155243 1051.26 632 636 147.1
D 12 235 4423586 29812.45 610 595 148.4
D 12 17 395944 2664.79 610 595 148.4
D 2 153 173795 1167.43 610 595 148.4

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