ASTROSAT CZTI

Data Quality Report

Orbit 35626

Creation date: 2022-05-10T12:03:45.821442
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/AS1T05_028T01_9000005100_35626cztM0_level2.evt modeM0/AS1T05_028T01_9000005100_35626cztM0_level2_quad_clean.evt
Size (bytes)454,429,44073,748,160
Size433.4 MB 70.3 MB
Events in quadrant A3,027,069470,119
Events in quadrant B3,860,877473,684
Events in quadrant C3,269,058461,909
Events in quadrant D3,237,244447,770

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125783
B0150922
C0128272
D0132242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54161202.215657%
B54162895.336041%
C54162184.025111%
D54161202.215657%

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 9629 5418 56 56 0.58% 1.03%
B 9629 5418 207 207 2.15% 3.82%
C 9629 5418 183 183 1.90% 3.38%
D 9629 5418 106 106 1.10% 1.96%

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 362670 2846.5 631 619 127.2
A 10 83 139894 1095.0 631 619 127.2
A 7 16 64893 505.33 631 619 127.2
B 5 172 1169678 9847.22 627 611 118.7
B 0 189 155814 1307.3 627 611 118.7
B 0 245 28214 232.5 627 611 118.7
C 0 10 625019 4377.65 618 623 142.6
C 15 214 218277 1525.98 618 623 142.6
C 14 67 10574 69.77 618 623 142.6
D 1 52 180077 1176.55 624 607 152.5
D 13 249 85316 555.33 624 607 152.5
D 2 31 83149 541.12 624 607 152.5

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