ASTROSAT CZTI

Data Quality Report

Orbit 38296

Creation date: 2024-06-27T21:50:53.855533
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/AS1A07_145T01_9000005370_38296cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38296cztM0_level2_quad_clean.evt
Size (bytes)1,091,612,160160,761,600
Size1.0 GB 153.3 MB
Events in quadrant A5,556,3561,198,456
Events in quadrant B5,723,6021,217,663
Events in quadrant C5,358,0311,163,967
Events in quadrant D22,931,407536,332

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229624
B0243603
C0224563
D0754363

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10840130.119926%
B108402322.140221%
C10840320.295203%
D10840602555.581181%

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 13616 10842 3 3 0.02% 0.03%
B 13616 10842 161 161 1.18% 1.48%
C 13616 10842 14 14 0.10% 0.13%
D 13616 10842 6052 6052 44.45% 55.82%

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 710763 2925.62 1208 1183 242.5
A 12 16 68669 278.25 1208 1183 242.5
A 12 189 52906 213.26 1208 1183 242.5
B 5 184 589728 2581.16 1192 1159 228.0
B 0 183 106415 461.6 1192 1159 228.0
B 4 232 99194 429.93 1192 1159 228.0
C 15 214 453107 1654.49 1176 1183 273.2
C 15 208 177303 644.77 1176 1183 273.2
C 2 16 65385 235.04 1176 1183 273.2
D 10 203 16611852 70273.96 977 950 236.4
D 2 16 1461646 6179.61 977 950 236.4
D 12 235 388195 1638.28 977 950 236.4

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