ASTROSAT CZTI

Data Quality Report

Orbit 39556

Creation date: 2024-06-27T22:06:05.676182
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/AS1A12_018T01_9000005488_39556cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39556cztM0_level2_quad_clean.evt
Size (bytes)796,878,720167,114,880
Size760.0 MB 159.4 MB
Events in quadrant A8,602,1911,122,201
Events in quadrant B4,744,7501,179,265
Events in quadrant C8,004,8921,067,375
Events in quadrant D7,328,547959,314

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323073
B0217722
C0306972
D0294172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105614514.270429%
B10561350.331408%
C105614504.260960%
D105617256.864880%

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 13339 10563 385 385 2.89% 3.64%
B 13339 10563 8 8 0.06% 0.08%
C 13339 10563 465 465 3.49% 4.40%
D 13339 10563 684 684 5.13% 6.48%

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 15 222 3307202 14625.52 1119 1094 226.1
A 10 83 704549 3111.94 1119 1094 226.1
A 9 143 160103 703.42 1119 1094 226.1
B 5 172 162799 753.46 1125 1095 214.6
B 5 255 110754 510.96 1125 1095 214.6
B 12 111 27652 123.74 1125 1095 214.6
C 9 187 2739872 10782.33 1088 1093 254.0
C 15 208 564131 2216.63 1088 1093 254.0
C 15 214 429451 1686.41 1088 1093 254.0
D 12 227 2334693 8928.49 1070 1039 261.4
D 1 52 277783 1058.81 1070 1039 261.4
D 13 249 203342 774.01 1070 1039 261.4

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