ASTROSAT CZTI

Data Quality Report

Orbit 35641

Creation date: 2022-05-10T14:06:50.076781
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/AS1A11_106T01_9000005102_35641cztM0_level2.evt modeM0/AS1A11_106T01_9000005102_35641cztM0_level2_quad_clean.evt
Size (bytes)732,438,72054,299,520
Size698.5 MB 51.8 MB
Events in quadrant A12,601,912203,065
Events in quadrant B3,526,437357,596
Events in quadrant C3,187,587363,291
Events in quadrant D2,519,896360,384

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0408633
B0137612
C0125962
D0109712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51095109100.000000%
B51093015.891564%
C51092033.973380%
D5109210.411039%

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 7022 5110 4910 4910 69.92% 96.09%
B 7022 5110 231 231 3.29% 4.52%
C 7022 5110 155 155 2.21% 3.03%
D 7022 5110 24 24 0.34% 0.47%

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 15 169 11045682 143546.61 379 371 76.9
A 10 83 86763 1122.76 379 371 76.9
A 13 254 4325 51.39 379 371 76.9
B 5 172 1186624 10458.65 578 562 113.4
B 0 189 37247 323.49 578 562 113.4
B 0 197 24279 209.14 578 562 113.4
C 0 10 667134 5025.45 568 572 132.6
C 15 214 210223 1580.63 568 572 132.6
C 9 187 45087 335.61 568 572 132.6
D 12 217 106693 757.63 576 561 140.1
D 2 153 81344 576.67 576 561 140.1
D 13 249 55971 395.55 576 561 140.1

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