ASTROSAT CZTI

Data Quality Report

Orbit 37101

Creation date: 2024-06-27T21:35:33.302376
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/AS1A09_138T04_9000005282_37101cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37101cztM0_level2_quad_clean.evt
Size (bytes)445,703,04048,136,320
Size425.1 MB 45.9 MB
Events in quadrant A3,055,017284,217
Events in quadrant B3,042,337285,719
Events in quadrant C2,746,735271,082
Events in quadrant D4,306,859257,510

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121373
B0119772
C0109372
D0162102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5117400.781708%
B51171072.091069%
C511720.039085%
D51173516.859488%

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 7241 5118 30 30 0.41% 0.59%
B 7241 5118 76 76 1.05% 1.48%
C 7241 5118 0 0 0.00% 0.00%
D 7240 5117 342 342 4.72% 6.68%

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 266922 1993.13 664 654 133.6
A 7 3 122678 913.4 664 654 133.6
A 15 237 58701 434.51 664 654 133.6
B 5 172 206139 1664.74 652 639 123.4
B 5 184 59640 477.96 652 639 123.4
B 0 190 59472 476.6 652 639 123.4
C 15 214 221942 1519.94 628 632 145.6
C 0 207 35633 240.38 628 632 145.6
C 0 10 19709 131.02 628 632 145.6
D 1 52 766605 5095.95 622 608 150.3
D 13 249 221897 1472.17 622 608 150.3
D 1 47 220213 1460.97 622 608 150.3

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